Vladimir Zadorozhny Louiqa Raschid Tao Zhan Laura Bright Validating an Access Cost Model for Wide Area Applications. 371-385 2001 conf/coopis/2001 CoopIS http://link.springer.de/link/service/series/0558/bibs/2172/21720371.htm db/conf/coopis/coopis2001.html#ZadorozhnyRZB01