1. B.O. Barker, A.G. Frisbie, K.R. Patrick, Broadening the definition of distance education in light of the new telecommunications technologies, in: K. Harry, M. John, D. Keegan (Eds.), Distance Education: New Perspectives, London/New York, 1993.
2. IP multicast of real-time MPEG over ATM;Barnes;Computer Networks and ISDN Systems,1996
3. C. Bouras et al., An interactive cooperative teleworking environment: Telemathea, in: Proc. ED-TELECOM 96 – World Conf. on Educational Telecommunications, Boston, USA, June 17–22, 1996.
4. B. Collins, Some influences of new telematics possibilities on the nature and organisation of learning, in: P. Held, W.F. Kugemann (Eds.), Telematics for Education and Training, Proc. Telematics for Education and Training Conf., Düsseldorf/Neuss, November 24–26, 1995.
5. Use of instructional material in universal teleteaching environments;Grebner;Computer Networks and ISDN Systems,1997