Hanan Lutfiyya Gary Molenkamp Michael Katchabaw Michael A. Bauer Issues in Managing Soft QoS Requirements in Distributed Systems Using a Policy-Based Framework. 185-201 2001 conf/policy/2001 POLICY http://link.springer.de/link/service/series/0558/bibs/1995/19950185.htm db/conf/policy/policy2001.html#LutfiyyaMKB01