George Potamias Vassilis Moustakis Giorgos Charissis Interactive Knowledge Based Construction and Maintenance. 697-717 1997 11 Applied Artificial Intelligence 7-8 http://taylorandfrancis.metapress.com/openurl.asp?genre=article&issn=0883-9514&volume=11&issue=7&spage=697 db/journals/aai/aai11.html#PotamiasMC97