Trakovická, Anna, et al. “Genetic Polymorphism of Pit-1 Gene Associated With Milk Production Traits in Holstein Cattle”.
Acta Agraria Kaposváriensis
, vol. 18, no. 1, Feb. 2014, pp. 146-51,
https://journal.uni-mate.hu/index.php/aak/article/view/2122
.