Signalling for handover in a broadband cellular ATM system. - Klaus Keil; Hajo-Erich Bakker; Wolfgang Schödl; Manfred Litzenburger (Broadband Communications, 1998)

Very Tight Coupling of Wireless LANs and UMTs Networks: A Technical Challenge and an Opportunity for Mobile Operators. - Manfred Litzenburger; Hajo-Erich Bakker; Stephen Kaminski; Klaus Keil (PWC, 2002)

Applications of RISM data in digital libraries and digital musicology. - Klaus Keil; Jennifer A. Ward (Int. J. Digit. Libr., 2019)