XX. International scientific conference of young scientists : book of abstracts, June 25 - 27, 2018, Zvolen, Slovakia. -- 1st ed. -- Zvolen : Technical University in Zvolen, 2018. -- 72 s. -- ISBN 978-80-228-3067-6 (brož.). strojárstvo * stroje * motory * tribotestory * lesnícka technika * harvestory * dopravníky