Cheikh Ba Marcos Aurélio Carrero Mirian Halfeld Ferrari Alves Martin A. Musicante PEWS: A New Language for Building Web Service Interfaces. 1215-1233 2005 11 J. UCS 7 http://www.jucs.org/jucs_11_7/pews_a_new_language db/journals/jucs/jucs11.html#BaCAM05