Ruling the Behavior of Distributed Software Components. - Guido Wirtz; Jörg Graf; Holger Giese (PDPTA, 1997)

Modeling Distributed Software Systems with Object Coordination Nets. - Holger Giese; Jörg Graf; Guido Wirtz (PDSE, 1998)

Contract-based Coordination of Distributed Object Systems. - Holger Giese; Jörg Graf; Guido Wirtz (PDPTA, 1999)

Closing the Gap Between Object-Oriented Modeling of Structure and Behavior. - Holger Giese; Jörg Graf; Guido Wirtz (UML, 1999)

Seamless Visual Object-Oriented Behavior Modeling for Distributed Software Systems. - Holger Giese; Jörg Graf; Guido Wirtz (VL, 1999)