Tobias Bucher Mario Klesse Stephan Kurpjuweit Robert Winter 33-48 2007 Situational Method Engineering http://dx.doi.org/10.1007/978-0-387-73947-2_5 conf/ifip8-1/2007 db/conf/ifip8-1/ifip8-1-2007.html#BucherKKW07