Limin Ao Xiaodong Zhu Wei Zhou Application on IOC Pattern in Integration of Workflow System with Application Systems. 875-882 2007 CCTA http://dx.doi.org/10.1007/978-0-387-77253-0_17 conf/ifip12/2007ccta2 db/conf/ifip12/ccta2007-2.html#AoZZ07