“The Relation of the Nutritional Composition of TMR and the Urea Concentration in Milk for Evaluation Nutrition and Efficiency of Protein Utilization in Lactating Dairy Cows”. Animal Welfare, Etológia és Tartástechnológia (AWETH), vol. 16, no. 1, May 2020, pp. 51-60, https://doi.org/10.17205/SZIE.AWETH.2020.1.051.