Xiaohui Zhao Chengfei Liu Wasim Sadiq Marek Kowalkiewicz Sira Yongchareon WS-BPEL Business Process Abstraction and Concretisation. 555-569 2009 DASFAA http://dx.doi.org/10.1007/978-3-642-00887-0_49 conf/dasfaa/2009 db/conf/dasfaa/dasfaa2009.html#ZhaoLSKY09