Jean-Pierre Thomesse Zoubir Mammeri L. Vega Time in Distributed Systems Cooperation and Communication Models. 41-49 1995 conf/ftdcs/1995 FTDCS http://csdl.computer.org/comp/proceedings/ftdcs/1995/7125/00/71250041abs.htm db/conf/ftdcs/ftdcs1995.html#ThomesseMV95