Development of Broadband ISDN Telecommunication Services Using SDL'92, ASN.1 and Automatic Code Generation. - Ulf Behnke; Michael Geipl; Gerd Kurzbach; Ralf Schröder; Nils Fischbeck; Renée Mundstock (FORTE, 1995)

External communication with SDL systems. - Gerd Kurzbach; Martin von Löwis; Ralf Schröder (SDL Forum, 1999)