KALÍŠEK, Jan et al. Monitoring of cattle physical activity depending on weather. In Towards climatic services. 1st ed. 1 CD-ROM (174 s.). ISBN 978-80-552-1390-3. Towards climatic services. Nitra : Slovak University of Agriculture, 2015, [4] s., CD-ROM. Dostupné na internete:<http://www.sbks.sk/doc/papers/Kalisek%20Monitoring.pdf>