Kertikov, T., and D. Kertikova. “Effect of Nitrogen Fertilization on Yield of Forage, Grain and Crude Protein of Winter Forage Pea Variety Mir During Two-Cut (Double) Harvesting”. Bulgarian Journal of Soil Science, Agrochemistry and Ecology 46, no. 2 (June 28, 2012): 50–56. Accessed October 15, 2026. https://agriacad.eu/ojs/index.php/bjssae/article/view/4005.