STOICHEVA, D.; ALEXANDROVA, P.; KOLEVA, V.; SIMEONOVA, Ts.; MITOVA, I.; ATANASOVA, E. Nitrogen Balance in Different Vegetable Crops Growing on Fluvisol in Southern Bulgaria. Bulgarian Journal of Soil Science, Agrochemistry and Ecology, Sofia, BG, v. 45, n. 4, p. 41–46, 2011. Disponível em: https://agriacad.eu/ojs/index.php/bjssae/article/view/4070.. Acesso em: 13 nov. 2026.