--- a/src/pyams_content/generations/__init__.py	Tue Jun 27 11:46:27 2017 +0200
+++ b/src/pyams_content/generations/__init__.py	Tue Jun 27 11:47:34 2017 +0200
@@ -18,12 +18,12 @@
 # import interfaces
 from pyams_catalog.interfaces import DATE_RESOLUTION
 from pyams_content.interfaces import IBaseContent
-from pyams_content.component.links.interfaces import IInternalLink
+from pyams_content.component.links.interfaces import IInternalLink, IInternalReferencesList
 from pyams_content.root.interfaces import ISiteRootToolsConfiguration
 from pyams_content.shared.common.interfaces import IWfSharedContent
 from pyams_utils.interfaces.site import ISiteGenerations
 from pyams_utils.interfaces.traversing import IPathElements
-from pyams_workflow.interfaces import IWorkflowState
+from pyams_workflow.interfaces import IWorkflowState, IWorkflowPublicationInfo
 from zope.dublincore.interfaces import IZopeDublinCore
 from zope.site.interfaces import INewLocalSite
 
@@ -75,8 +75,16 @@
                     ('modified_date', DatetimeIndexWithInterface, {'interface': IZopeDublinCore,
                                                                    'discriminator': 'modified',
                                                                    'resolution': DATE_RESOLUTION}),
+                    ('publication_date', DatetimeIndexWithInterface, {'interface': IWorkflowPublicationInfo,
+                                                                      'discriminator': 'publication_date',
+                                                                      'resolution': DATE_RESOLUTION}),
+                    ('first_publication_date', DatetimeIndexWithInterface, {'interface': IWorkflowPublicationInfo,
+                                                                            'discriminator': 'first_publication_date',
+                                                                            'resolution': DATE_RESOLUTION}),
                     ('link_reference', FieldIndexWithInterface, {'interface': IInternalLink,
-                                                                 'discriminator': 'reference'})]
+                                                                 'discriminator': 'reference'}),
+                    ('link_references', KeywordIndexWithInterface, {'interface': IInternalReferencesList,
+                                                                    'discriminator': 'references'})]
 
 
 REQUIRED_TOOLS = [('views', ViewsManager),