Henrique Paques Ling Liu Calton Pu Adaptation Space: A Design Framework for Adaptive Web Services. 49-63 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2853&spage=49 2003 conf/icws/2003e ICWS-Europe db/conf/icws/icwse2003.html#PaquesLP03