Innovative Concepts for Configurating Shared Workspaces through Visual Programming
M. Dücker, W. Müller, J. Rubart, in:  Proceedings of the 32nd Annual Hawaii International Conference on Systems Sciences, Maui, HI, USA , 1999.

VIPspace - A Visually Programmable Shared Workspace
M. Dücker, W. Müller, J. Rubart, in:  Proceedings. 1998 IEEE Symposium on Visual Languages , Halifax, NS, Canada , 1998.