Kamali, M.A. and Horn, P. (2001) “Heterosis in egg production in different parts of the laying period of layers of Rhode Island Red origin selected by RRS selection in two environments: Part I. Heterosis in egg production in the original populations after few generations of RRS selection”, Acta Agraria Kaposváriensis, 5(2), pp. 23–30. Available at: https://journal.uni-mate.hu/index.php/aak/article/view/1573 (Accessed: 5 December 2025).