Klaus Rebensburg Dirk Hetzer Karl Jonas Manfred Kaul Josed Schäfer Distributing virtual worlds in a teleteaching environment. 66-75 1995 conf/ftdcs/1995 FTDCS http://csdl.computer.org/comp/proceedings/ftdcs/1995/7125/00/71250066abs.htm db/conf/ftdcs/ftdcs1995.html#RebensburgHJKS95