er.sagepub.com/cgi/content/abstract/16/4/263 The online version of this article can be found at: Published by: http://www.sagepublications.com can be found at:Concurrent EngineeringAdditional services and information for http://cer.sagepub.com/cgi/alertsEmail Alerts: http://cer.sagepub.com/subscriptionsSubscriptions: http://www.sagepub.com/journalsReprints.navReprints: http://www.sagepub.co.uk/journalsPermissions.navPermissions: http://cer.sagepub.com/cgi/content/refs/16/4/263Citations at UNIV OF ALBERTA LIBRARY on December 18, 2008http://cer.sagepub.comDownloaded from