BOZHINOVA, R. Mineral Composition of Burley Tobacco аs Dependant on Nitrogen Fertilization Rate and Variety. Bulgarian Journal of Soil Science, Agrochemistry and Ecology, Sofia, BG, v. 44, n. 2, p. 35–40, 2010. Disponível em: https://agriacad.eu/ojs/index.php/bjssae/article/view/4202.. Acesso em: 2 oct. 2026.