PETRIČ, Daniel et al. In vitro study on effect of dry medicinal plants on gastrointestinal fermentation, protozoan population and methane emissions in sheep. In Animal Physiology. konferencia. Animal Physiology 2019 : book of abstracts. 1. vyd. - Nitra : SPU, 2019. ISBN 978-80-552-1998-1, online, S. 49. Dostupné na internete: <https://sites.google.com/view/animal-physiology-conference/book-of-abstracts>