• SDL2005
• SDL2007
• For full information about SDL, visit the www.sdl-forum.org
• The UML www.uml-forum.org
• For full information about SDL-RT, visit the www.sdl-rt.org
• ETSI
• ITU
• SDL Task Force
• UML book Laurent Doldi's UML2 Illustrated
• SDL book Laurent Doldi's SDL book
• SDL and UML2 Article by Institutt for telematikk - Norges teknisk-naturvitenskapelige universitet
• Rick Reed's SDL tutorial