Hans Schuster Stefan Jablonski Petra Heinl Christoph Bussler A General Framework for the Execution of Heterogenous Programs in Workflow Management Systems. 104-113 1996 conf/coopis/1996 CoopIS db/conf/coopis/coopis96.html#SchusterJHB96 http://doi.ieeecomputersociety.org/10.1109/COOPIS.1996.555002