Hüseyin Kemâl ÇakmakUwe G. KühnapfelAnimation and Simulation Techniques for VR-Training Systems in Endoscopic Surgery.173-1852000Computer Animation and Simulationhttps://doi.org/10.1007/978-3-7091-6344-3_13conf/egcas/2000db/conf/egcas/egcas2000.html#CakmakK00