BOZHINOVA, Radka. Effect of nitrogen rate and foliar fertilization on yield, quality leaf chemistry in Burley tobacco. Bulgarian Journal of Crop Science, Sofia, BG, v. 54, n. 2, p. 33–39, 2017. Disponível em: https://agriacad.eu/ojs/index.php/bjcs/article/view/3047.. Acesso em: 11 oct. 2026.