Zigo, František, Milan Vasiľ, Zuzana Farkašová, Silvia Ondrašovičová, Martina Zigová, Jana Maľová, Jana Výrostková, Jolanta Bujok, and Ewa Pecka-Kiełb. “Impact of Humic Acid As an Organic Additive on the Milk Parameters and Occurrence of Mastitis in Dairy Cows”. Potravinarstvo Slovak Journal of Food Sciences 14 (June 28, 2020): 358–364. Accessed April 20, 2024. https://potravinarstvo.com/journal1/index.php/potravinarstvo/article/view/1340.