Winfried Lamersdorf Michael Merz M. Tuan Tu Distributed Systems Technology for Electronic Commerce Applications. 135-148 http://link.springer.de/link/service/series/0558/bibs/1521/15210135.htm 1998 conf/sofsem/1998 SOFSEM db/conf/sofsem/sofsem1998.html#LamersdorfMT98