FILÍPEK, Josef - KŘIVÁNEK, Ivo. Animated physical principles of mechanical engineering. In PRAE 2011 : proceedings of scientific works 149 s. ISBN 978-80-552-0662-2. . Nitra : Slovak University of Agriculture, 2011, s. 44-47. Dostupné na internete:<http://www.slpk.sk/eldo/2012/zborniky/004-12/Filipek_Krivanek.pdf>