BEŇO, Matúš - PETERKA, Jozef. Free Form Surfaces Production on Lathe with Counter Spindle. In Young Technologist´s Day 2010 (YTD 2010) : 1th International University Student´s Conference. Proceedings. Prešov, 17th - 19th June 2010, Slovak Republic. Košice : Technical University, 2010, s.29-34. ISBN 978-80-553-0439-7. M*