Warken, Thomas Algorithms and Complexity, MPI for Informatics, Max Planck Society; International Max Planck Research School, MPI for Informatics, Max Planck Society;
http://scidok.sulb.uni-saarland.de/volltexte/2004/330/ (全文テキスト(全般))
http://scidok.sulb.uni-saarland.de/doku/urheberrecht.php?la=de (著作権譲渡合意書)
Warken, T. (2004). Collision detection for Curved Rigid Objects in the Context of Dynamics Simulations. PhD Thesis, Universität des Saarlandes, Saarbrücken.