diff --git a/docs/SchemaRelationnel.odg b/docs/SchemaRelationnel.odg
index 65d0777..1cc6cf7 100644
Binary files a/docs/SchemaRelationnel.odg and b/docs/SchemaRelationnel.odg differ
diff --git a/stages/admin.py b/stages/admin.py
index bda0f3d..fc94bc0 100644
--- a/stages/admin.py
+++ b/stages/admin.py
@@ -24,7 +24,7 @@ class ContactInline(admin.StackedInline):
 
 class CorporationAdmin(admin.ModelAdmin):
     list_display = ('name', 'pcode', 'city')
-    fields = ('name', 'street', ('pcode', 'city'), ('tel', 'email'))
+    fields = ('name', 'typ', 'street', ('pcode', 'city'), ('tel', 'email'), 'web')
     inlines = [ContactInline]
 
 
@@ -33,7 +33,7 @@ class AvailabilityInline(admin.TabularInline):
     extra = 1
 
 class PeriodAdmin(admin.ModelAdmin):
-    list_display = ('dates', 'section')
+    list_display = ('title', 'dates', 'section')
     list_filter = ('section',)
     inlines = [AvailabilityInline]
 
diff --git a/stages/fixtures/test_fixture.json b/stages/fixtures/test_fixture.json
index 4750377..ad1eb95 100644
--- a/stages/fixtures/test_fixture.json
+++ b/stages/fixtures/test_fixture.json
@@ -81,7 +81,8 @@
     "model": "stages.referent", 
     "fields": {
       "first_name": "Julie", 
-      "last_name": "Caux"
+      "last_name": "Caux",
+      "abrev": "JCA"
     }
   }, 
   {
@@ -91,9 +92,11 @@
       "city": "Moulineaux", 
       "tel": "", 
       "name": "Centre p\u00e9dagogique XY", 
+      "typ": "Institution",
       "pcode": "2500", 
       "street": "Rue des champs 12", 
-      "email": ""
+      "email": "",
+      "web": ""
     }
   }, 
   {
@@ -127,6 +130,7 @@
     "pk": 1, 
     "model": "stages.period", 
     "fields": {
+      "title": "Stage de pré-sensibilisation",
       "section": 1, 
       "start_date": "2012-11-26", 
       "end_date": "2012-12-07"
diff --git a/stages/models.py b/stages/models.py
index 6101aa6..0ac6cdf 100644
--- a/stages/models.py
+++ b/stages/models.py
@@ -44,6 +44,7 @@ class Student(models.Model):
 class Referent(models.Model):
     first_name = models.CharField(max_length=40, verbose_name='Prénom')
     last_name = models.CharField(max_length=40, verbose_name='Nom')
+    abrev = models.CharField(max_length=10, blank=True, verbose_name='Initiales')
 
     class Meta:
         verbose_name = "Référent"
@@ -54,11 +55,13 @@ class Referent(models.Model):
 
 class Corporation(models.Model):
     name = models.CharField(max_length=100, verbose_name='Nom')
+    typ = models.CharField(max_length=40, blank=True, verbose_name='Type de structure')
     street = models.CharField(max_length=100, blank=True, verbose_name='Rue')
     pcode = models.CharField(max_length=4, verbose_name='Code postal')
     city = models.CharField(max_length=40, verbose_name='Localité')
     tel = models.CharField(max_length=20, blank=True, verbose_name='Téléphone')
-    email = models.CharField(max_length=40, blank=True, verbose_name='Courriel')
+    email = models.EmailField(blank=True, verbose_name='Courriel')
+    web = models.URLField(blank=True, verbose_name='Site Web')
 
     class Meta:
         verbose_name = "Institution"
@@ -95,6 +98,7 @@ class Domain(models.Model):
 
 class Period(models.Model):
     """ Périodes de stages """
+    title = models.CharField(max_length=150, verbose_name='Titre')
     section = models.ForeignKey(Section, verbose_name='Filière')
     start_date = models.DateField(verbose_name='Date de début')
     end_date = models.DateField(verbose_name='Date de fin')