Oliver Kersting Jürgen Döllner Interactive 3D Graphics Applications for Tcl. 1-12 2002 conf/usenix/2002f USENIX Annual Technical Conference, FREENIX Track http://www.usenix.org/publications/library/proceedings/usenix02/tech/freenix/kersting.html db/conf/usenix/usenix2002f.html#KerstingD02