T. Binder, T. Psik, I. Wagner et al.:
"Supporting Configurability in a Tangibly Augmented Environment for Design Students.";
Personal and Ubiquitous Computing, 8 (2004), 5; 291 - 293.
http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04968642