Bart Verheecke María Agustina Cibrán Viviane Jonckers Aspect-Oriented Programming for Dynamic Web Service Monitoring and Selection. 15-29 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3250&spage=15 2004 conf/ecows/2004 ECOWS db/conf/ecows/ecows2004.html#VerheeckeCJ04