OČENÁŠ, Andrej - ČULÍK, Martin. Trávobzuk: instrument for whistle with grass. In Material - Acoustics - Place 2012 : 7th international conference, September 12-14, 2012, Zvolen - Slovakia [elektronický zdroj]. - Zvolen : Technical University in Zvolen, 2012. ISBN 978-80-228-2372-2, cD-ROM, 1 p. Požiadavky na systém: CD-ROM mechanika.