Solution : https://service.sap.com/sap/support/notes/1074019 (SAP Service marketplace login required)
Key words : 
package type availability0001 sapk-52001incrmuif crt, sapka70012 aug/09/20070002 sapk-52002incrmuif crt, sapka70013 oct/23/20070003 sapk-52003incrmuif crt, sapka70014 feb/13/20080004 sapk-52004incrmuif crt, sapka70015 apr/29/20080005 sapk-52005incrmuif crt, sapka70016 july/29/20080006 sapk-52006incrmuif crt, sapka70017 oct/31/20080007 sapk-52007incrmuif crt, sapka70018  feb/02/20090008 sapk-52008incrmuif crt, sapka70019  jul/10/20090009 sapk-52009incrmuif crt, sapka70020  oct/09/20090010 sapk-52010incrmuif crt
Related Notes : 
       
| 1132139 | Overview: Notes regarding the CRMUIF add-on | 
| 1039395 | Add. info.: Upgrade to SAP CRM 5.2 ABAP |