diff --git a/papers/commands/remove_cmd.py b/papers/commands/remove_cmd.py
index a40e40a..e1dfea4 100644
--- a/papers/commands/remove_cmd.py
+++ b/papers/commands/remove_cmd.py
@@ -1,7 +1,10 @@
 from .. import repo
 from .. import color
+from .. import configs
 from .helpers import add_references_argument, parse_references
 
+from ..events import RemoveEvent
+
 
 def parser(subparsers, config):
     parser = subparsers.add_parser('remove', help='removes a paper')
@@ -18,4 +21,7 @@ def command(config, ui, references):
     sure = ui.input_yn(question=are_you_sure, default='n')
     if sure:
         for c in citekeys:
+            rmevent = RemoveEvent(config, ui, c)
+            rmevent.send()
+
             rp.remove(c)
diff --git a/papers/events.py b/papers/events.py
new file mode 100644
index 0000000..efd94d6
--- /dev/null
+++ b/papers/events.py
@@ -0,0 +1,34 @@
+_listener = {}
+
+
+class Event(object):
+    """Base event that can be sent to listeners.
+    """
+
+    def send(self):
+        """ This function sends the instance of the class, i.e. the event
+        to be sent, to all function that listen to it.
+        """
+        if self.__class__.__name__ in _listener:
+            for f, args in _listener[self.__class__.__name__]:
+                f(self, *args)
+
+    @classmethod
+    def listen(cls, *args):
+        def wrap(f):
+            if cls.__name__ not in _listener:
+                _listener[cls.__name__] = []
+            _listener[cls.__name__].append((f, args))
+
+            # next step allow us to call the function itself without Event raised
+            def wrapped_f(*args):
+                f(*args)
+            return wrapped_f
+        return wrap
+
+
+class RemoveEvent(Event):
+    def __init__(self, config, ui, citekey):
+        self.config = config
+        self.ui = ui
+        self.citekey = citekey
diff --git a/papers/papers b/papers/papers
index 1399f67..89c78de 100755
--- a/papers/papers
+++ b/papers/papers
@@ -8,6 +8,7 @@ import collections
 from papers.ui import UI
 from papers import configs
 from papers import commands
+from papers import plugin
 
 cmds = collections.OrderedDict([
         ('init',        commands.init_cmd),
@@ -29,18 +30,16 @@ config = configs.read_config()
 ui = UI(config)
 
 # Extend with plugin commands
-plugs = configs.get_plugins(config)
-for plugname in plugs:
-    module_name = 'papers.plugins.' + plugname + '.' + plugname + '_cmd'
-    plug = __import__(module_name, globals(), locals(),
-                      ['parser', 'command'], -1)
-    cmds.update(collections.OrderedDict([(plugname, plug)]))
+plugin.load_plugins(config, ui, configs.get_plugins(config))
+for p in plugin.get_plugins().values():
+    cmds.update(collections.OrderedDict([(p.name, p)]))
+#
 
 parser = argparse.ArgumentParser(description="research papers repository")
 subparsers = parser.add_subparsers(title="valid commands", dest="command")
 
 for cmd_mod in cmds.values():
-    subparser = cmd_mod.parser(subparsers, config)
+    subparser = cmd_mod.parser(subparsers, config)  # why do we return the subparser ?
 
 args = parser.parse_args()
 args.config = config
diff --git a/papers/plugin.py b/papers/plugin.py
new file mode 100644
index 0000000..7794e3f
--- /dev/null
+++ b/papers/plugin.py
@@ -0,0 +1,79 @@
+import importlib
+
+PLUGIN_NAMESPACE = 'plugs'
+
+_classes = []
+_instances = {}
+
+
+class PapersPlugin(object):
+    """The base class for all plugins. Plugins provide
+    functionality by defining a subclass of PapersPlugin and overriding
+    the abstract methods defined here.
+    """
+    def __init__(self, config, ui):
+        """Perform one-time plugin setup.
+        """
+        self.name = self.__module__.split('.')[-1]
+        self.config = config
+        self.ui = ui
+
+    #config and ui and given again to stay consistent with the core papers cmd.
+    #two options:
+    #- create specific cases in script papers/papers
+    #- do not store self.config and self.ui and use them if needed when command is called
+    #this may end up with a lot of function with config/ui in argument
+    #or just keep it that way...
+    def parser(self, subparsers, config):
+        """ Should retrun the parser with plugins specific command.
+        This is a basic example
+        """
+        parser = subparsers.add_parser(self.name, help="echo string in argument")
+        parser.add_argument('strings', nargs='*', help='the strings')
+        return parser
+
+    def command(self, config, ui, strings):
+        """This function will be called with argument defined in the parser above
+        This is a basic example
+        """
+        for s in strings:
+            print s
+
+    @classmethod
+    def get_instance(cls):
+        if cls in _instances:
+            return _instances[cls]
+        else:
+            raise RuntimeError("{} instance not created".format(cls.__name__))
+
+
+def load_plugins(config, ui, names):
+    """Imports the modules for a sequence of plugin names. Each name
+    must be the name of a Python module under the "PLUGIN_NAMESPACE" namespace
+    package in sys.path; the module indicated should contain the
+    PapersPlugin subclasses desired.
+    """
+    for name in names:
+        modname = '%s.%s.%s.%s' % ('papers', PLUGIN_NAMESPACE, name, name)
+        try:
+            try:
+                namespace = importlib.import_module(modname)
+            except ImportError as exc:
+                # Again, this is hacky:
+                if exc.args[0].endswith(' ' + name):
+                    ui.warning('plugin {} not found'.format(name))
+                else:
+                    raise
+            else:
+                for obj in namespace.__dict__.values():
+                    if isinstance(obj, type) and issubclass(obj, PapersPlugin) \
+                            and obj != PapersPlugin:
+                        _classes.append(obj)
+                        _instances[obj] = obj(config, ui)
+
+        except:
+            ui.warning('error loading plugin {}'.format(name))
+
+
+def get_plugins():
+    return _instances
diff --git a/papers/plugins/__init__.py b/papers/plugs/__init__.py
similarity index 100%
rename from papers/plugins/__init__.py
rename to papers/plugs/__init__.py
diff --git a/papers/plugins/texnote/__init__.py b/papers/plugs/texnote/__init__.py
similarity index 100%
rename from papers/plugins/texnote/__init__.py
rename to papers/plugs/texnote/__init__.py
diff --git a/papers/plugins/texnote/note_sample.tex b/papers/plugs/texnote/note_sample.tex
similarity index 100%
rename from papers/plugins/texnote/note_sample.tex
rename to papers/plugs/texnote/note_sample.tex
diff --git a/papers/plugins/texnote/texnote_cmd.py b/papers/plugs/texnote/texnote.py
similarity index 60%
rename from papers/plugins/texnote/texnote_cmd.py
rename to papers/plugs/texnote/texnote.py
index 83b1ce3..da26383 100644
--- a/papers/plugins/texnote/texnote_cmd.py
+++ b/papers/plugs/texnote/texnote.py
@@ -1,58 +1,72 @@
-#import ConfigParser
-
-#from ... import configs
-#cfg = configs.read_config()
-
-#TEXNOTE_SECTION = 'texnote'
-#DEFAULT_EDIT_CMD = cfg.get(configs.MAIN_SECTION, 'edit-cmd')
-
-#TODO file should not be created before the end of the process to ensure everything went ok
-#TODO add subparser to have more feature
-#TODO add clean command to wipe out any compilation file
-#TODO add function to merge several texnote in one based on a research result
-
 import os
 import shutil
 import subprocess
 
 from ... import repo
-from ...paper import NoDocumentFile
 from ... import configs
 from ... import files
+from ...plugin import PapersPlugin
 from ...commands.helpers import add_references_argument, parse_reference
 
+from ...events import RemoveEvent
+
+
 TEXNOTE_SECTION = 'texnote'
 TEXNOTE_SAMPLE_FILE = os.path.join(os.path.dirname(__file__), 'note_sample.tex')
 TEXNOTE_DIR = 'texnote'
 
-def parser(subparsers, config):
-    parser = subparsers.add_parser('texnote', help="edit advance note in latex")
-    parser.add_argument('-v', '--view', action='store_true', help='open the paper in a pdf viewer', default=None)
-    add_references_argument(parser, single=True)
-    return parser
-
-
-def command(config, ui, ref, view):
-    ui.print_('texnote test')
-    if view is not None:
-        subprocess.Popen(['papers', 'open', ref])
-
-    # check if citekey exist
-    open_texnote(config, ui, ref)
 
+class TexnotePlugin(PapersPlugin):
+
+    def parser(self, subparsers, config):
+        parser = subparsers.add_parser(self.name, help="edit advance note in latex")
+        sub = parser.add_subparsers(title="valid texnote commands", dest="texcmd")
+        p = sub.add_parser("remove", help="remove a reference")
+        add_references_argument(p, single=True)
+        p = sub.add_parser("edit", help="edit the reference texnote")
+        add_references_argument(p, single=True)
+        #add_references_argument(parser, single=True)
+        parser.add_argument('-v', '--view', action='store_true', help='open the paper in a pdf viewer', default=None)
+        return parser
+
+    def command(self, config, ui, texcmd, reference, view):
+        if view is not None:
+            subprocess.Popen(['papers', 'open', reference])
+        if texcmd == 'edit':
+            open_texnote(config, ui, reference)
+
+    def toto(self):
+        print "toto"
+
+
+@RemoveEvent.listen()
+def remove(rmevent):
+    texplug = TexnotePlugin.get_instance()
+    texplug.toto()
+    rp = repo.Repository.from_directory(rmevent.config)
+    paper = rp.get_paper(parse_reference(rmevent.ui, rp, rmevent.citekey))
+    if 'texnote' in paper.metadata:
+        try:
+            os.remove(paper.metadata['texnote'])
+        except OSError:
+            pass  # For some reason, the texnote file didn't exist
+        paper.metadata.pop('texnote')
+        metapath = rp.path_to_paper_file(paper.citekey, 'meta')
+        files.save_meta(paper.metadata, metapath)
 
 
 def open_texnote(config, ui, ref):
     rp = repo.Repository.from_directory(config)
     paper = rp.get_paper(parse_reference(ui, rp, ref))
 
-    if not paper.metadata.has_key('texnote'):
+    #ugly to recode like for the doc field
+    if not 'texnote' in paper.metadata:
         texnote_dir = os.path.join(rp.papersdir, TEXNOTE_DIR)
-        # if folder does not exist create it
+        # if folder does not exist create it, this should be relative
         if not os.path.exists(texnote_dir):
             os.mkdir(texnote_dir)
         texnote_path = os.path.join(texnote_dir, paper.citekey + '.tex')
-        paper.metadata['texnote'] =  files.clean_path(texnote_path)
+        paper.metadata['texnote'] = files.clean_path(texnote_path)
         # save path in metadata
         metapath = rp.path_to_paper_file(paper.citekey, 'meta')
         files.save_meta(paper.metadata, metapath)
@@ -73,7 +87,6 @@ def open_texnote(config, ui, ref):
         subprocess.Popen([config.get(configs.MAIN_SECTION, 'edit-cmd'), texnote_path])
 
 
-
 ##### ugly replace by proper #####
 def format_author(author):
     first = author.first()
@@ -88,13 +101,14 @@ def format_author(author):
         formatted += ' ' + last[0]
     return formatted
 
+
 def concatenate_authors(authors):
     concatenated = ''
     for a in range(len(authors)):
         if len(authors) > 1 and a > 0:
             if a == len(authors) - 1:
                 concatenated += 'and '
-            else :
+            else:
                 concatenated += ', '
         concatenated += authors[a]
     return concatenated
@@ -107,27 +121,27 @@ def autofill_texnote(texnote_path, bibentry):
     text = f.read()
     f.close()
     # modify with bib info
-    print bibentry
+    #print bibentry
     fields = bibentry.fields
     persons = bibentry.persons
 
-    if fields.has_key('title'):
+    if 'title' in fields:
         title_str = fields['title']
         text = text.replace("TITLE", title_str)
 
-    if fields.has_key('year'):
+    if 'year' in fields:
         year_str = fields['year']
         text = text.replace("YEAR", year_str)
 
-    if fields.has_key('abstract'):
+    if 'abstract' in fields:
         abstract_str = fields['abstract']
         text = text.replace("ABSTRACT", abstract_str)
 
-    if persons.has_key('author'):
+    if 'author' in persons:
         authors = []
         for author in persons['author']:
             authors.append(format_author(author))
-        author_str =  concatenate_authors(authors)
+        author_str = concatenate_authors(authors)
         text = text.replace("AUTHOR", author_str)
 
     # write file
diff --git a/setup.py b/setup.py
index c9d0a64..e0c3119 100644
--- a/setup.py
+++ b/setup.py
@@ -10,9 +10,9 @@ setup(name='papers',
       description='research papers manager',
       requires=['pybtex'],
       packages=find_packages(),
+      package_data={'': ['*.tex']},
       scripts=['papers/papers']
       )
 
-# TODO include package data from plugins
-# Jonathan could not make it works (08/06/2013)
+# TODO include proper package data from plugins (08/06/2013)
 # should we use MANIFEST.in or package_data = ..., or both
diff --git a/tests/test_events.py b/tests/test_events.py
new file mode 100644
index 0000000..0b509a3
--- /dev/null
+++ b/tests/test_events.py
@@ -0,0 +1,65 @@
+from unittest import TestCase
+
+from papers.events import Event
+
+
+_output = None
+
+
+class TestEvent(Event):
+    def __init__(self, string):
+        self.string = string
+
+    def print_one(self):
+        _output.append('one')
+
+
+class AddEvent(Event):
+    def __init__(self):
+        pass
+
+    def add(self, a, b):
+        return a + b
+
+
+@TestEvent.listen(12, 15)
+def display(TestEventInstance, nb1, nb2):
+    _output.append("%s %s %s"
+                    % (TestEventInstance.string, nb1, nb2))
+
+
+@TestEvent.listen()
+def hello_word(TestEventInstance):
+    _output.append('Helloword')
+
+
+@TestEvent.listen()
+def print_it(TestEventInstance):
+    TestEventInstance.print_one()
+
+
+@AddEvent.listen()
+def do_it(AddEventInstance):
+    _output.append(AddEventInstance.add(17, 25))
+
+
+class TestEvents(TestCase):
+
+    def setUp(self):
+        global _output
+        _output = []
+
+    def test_listen_TestEvent(self):
+        # using the callback system
+        myevent = TestEvent('abcdefghijklmnopqrstuvwxyz')
+        myevent.send()  # this one call three function
+        correct = ['abcdefghijklmnopqrstuvwxyz 12 15',
+                   'Helloword',
+                   'one']
+        self.assertEquals(_output, correct)
+
+    def test_listen_AddEvent(self):
+        addevent = AddEvent()
+        addevent.send()
+        correct = [42]
+        self.assertEquals(_output, correct)