Literatūra
Batyuk, I. F.; N. G. Manilova, B. Y. Shvaikowskii, “Quality of Hay from Meadows,” Boron in Agriculture, 1993, vol. 13, no. 2, p. 8.
Budzyński, Wojciech S.; Krzysztof J. Jankowski, Władysław Szempliński, “Cultivar-Related and Agronomic Conditions of Rye Yielding on Good Rye Soil...