Rudolph, C.C.RudolphVelikova, Z.Z.VelikovaKuntze, N.N.Kuntze2022-03-112022-03-112009https://publica.fraunhofer.de/handle/publica/36337410.1016/j.entcs.2009.03.0132-s2.0-62949132312en004Secure web service workflow executionconference paper