diff --git a/easy_my_coop/__init__.py b/easy_my_coop/__init__.py
index 6135e68..d682b72 100644
--- a/easy_my_coop/__init__.py
+++ b/easy_my_coop/__init__.py
@@ -1,3 +1,3 @@
 from . import models
 from . import controllers
-#import wizard
\ No newline at end of file
+from . import report
\ No newline at end of file
diff --git a/easy_my_coop/models/partner.py b/easy_my_coop/models/partner.py
index 6399f76..37cd498 100644
--- a/easy_my_coop/models/partner.py
+++ b/easy_my_coop/models/partner.py
@@ -1,9 +1,50 @@
 # -*- coding: utf-8 -*-
 from openerp import api, fields, models, _
 
-class res_partner(models.Model):
+class ResPartner(models.Model):
     _inherit = 'res.partner'
-    
+
+    @api.multi
+    def _invoice_total(self):
+        account_invoice_report = self.env['account.invoice.report']
+        if not self.ids:
+            self.total_invoiced = 0.0
+            return True
+ 
+        user_currency_id = self.env.user.company_id.currency_id.id
+        all_partners_and_children = {}
+        all_partner_ids = []
+        for partner in self:
+            # price_total is in the company currency
+            all_partners_and_children[partner] = self.search([('id', 'child_of', partner.id)]).ids
+            all_partner_ids += all_partners_and_children[partner]
+ 
+        # searching account.invoice.report via the orm is comparatively expensive
+        # (generates queries "id in []" forcing to build the full table).
+        # In simple cases where all invoices are in the same currency than the user's company
+        # access directly these elements
+ 
+        # generate where clause to include multicompany rules
+        where_query = account_invoice_report._where_calc([
+            ('partner_id', 'in', all_partner_ids), ('state', 'not in', ['draft', 'cancel']), ('company_id', '=', self.env.user.company_id.id),
+            ('type', 'in', ('out_invoice', 'out_refund')),
+            ('release_capital_request','=',False),
+        ])
+        account_invoice_report._apply_ir_rules(where_query, 'read')
+        from_clause, where_clause, where_clause_params = where_query.get_sql()
+ 
+        # price_total is in the company currency
+        query = """
+                  SELECT SUM(price_total) as total, partner_id
+                    FROM account_invoice_report account_invoice_report
+                   WHERE %s
+                   GROUP BY partner_id
+                """ % where_clause
+        self.env.cr.execute(query, where_clause_params)
+        price_totals = self.env.cr.dictfetchall()
+        for partner, child_ids in all_partners_and_children.items():
+            partner.total_invoiced = sum(price['total'] for price in price_totals if price['partner_id'] in child_ids)
+            
     @api.multi
     def _get_share_type(self):
         share_type_list = [('','')]
diff --git a/easy_my_coop/report/__init__.py b/easy_my_coop/report/__init__.py
new file mode 100644
index 0000000..52e6270
--- /dev/null
+++ b/easy_my_coop/report/__init__.py
@@ -0,0 +1 @@
+from . import account_invoice_report
diff --git a/easy_my_coop/report/account_invoice_report.py b/easy_my_coop/report/account_invoice_report.py
new file mode 100644
index 0000000..7bd6e40
--- /dev/null
+++ b/easy_my_coop/report/account_invoice_report.py
@@ -0,0 +1,13 @@
+# -*- coding: utf-8 -*-
+from openerp import api, fields, models, _
+
+class AccountInvoiceReport(models.Model):
+    _inherit = "account.invoice.report"
+    
+    release_capital_request = fields.Boolean(string="Release capital request")
+    
+    def _select(self):
+        return  super(AccountInvoiceReport, self)._select() + ", sub.release_capital_request as release_capital_request"
+            
+    def _sub_select(self):
+        return  super(AccountInvoiceReport, self)._sub_select() + ", ai.release_capital_request as release_capital_request"
\ No newline at end of file
diff --git a/easy_my_coop/view/account_invoice_view.xml b/easy_my_coop/view/account_invoice_view.xml
index 2f4738b..91bf4dd 100644
--- a/easy_my_coop/view/account_invoice_view.xml
+++ b/easy_my_coop/view/account_invoice_view.xml
@@ -74,5 +74,15 @@
             </field>
         </record>
         
+		<record id="account.action_invoice_refund_out_tree" model="ir.actions.act_window">
+            <field name="name">Invoices</field>
+            <field name="res_model">account.invoice</field>
+            <field name="view_type">form</field>
+            <field name="view_mode">tree,form,kanban,calendar,graph,pivot</field>
+            <field name="view_id" ref="account.invoice_tree"/>
+            <field name="domain">[('type','in', ['out_invoice', 'out_refund']), ('state', 'not in', ['draft', 'cancel']),('release_capital_request','=',False)]</field>
+            <field name="context">{'default_type':'out_invoice', 'type':'out_invoice', 'journal_type': 'sale'}</field>
+            <field name="search_view_id" ref="account.view_account_invoice_filter"/>
+        </record>
 	</data>
 </openerp>
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