@inproceedingsDücker_Geiger_Hunstock_Lehrenfeld_Müller_1997, place=Capri, Italy, title=Visual-Textual Prototyping of 4D Scenes, DOI=10.1109/VL.1997.626601, booktitle=Proceedings of the 1997 IEEE Symposium on Visual Languages, author=Dücker, M. and Geiger, Christian and Hunstock, R. and Lehrenfeld, Georg and Müller, Wolfgang, year=1997 

@inproceedingsGriebel_Lehrenfeld_Müller_Tahedl_Uhr_1996, place=Boulder CO, title=Integrating a Constraint Solver into a Real-Time Animation Environment, DOI=10.1109/VL.1996.545262, booktitle=Proceedings of the 1996 IEEE Symposium on Visual Languages, author=Griebel, P. and Lehrenfeld, Georg and Müller, Wolfgang and Tahedl, C. and Uhr, H., year=1996