Zándoki, Rita, János Csapó, and János Tőzsér. 2004. “Milk Production of Suckler Cows 1 Methods of Measurements, Factors Affecting Milk Production, Correlation With Weaning Weight, Heritability: A Review”. Acta Agraria Kaposváriensis 8 (1): 11-24. https://journal.uni-mate.hu/index.php/aak/article/view/1675.