DONKOVA, Radka; NEDYALKOVA, Kostadinka; PERFANOVA, Jonita; VALCHOVSKI, Hristo. Response of Cowpea (Vigna unguiculata L.) to Inoculation with Nitrogen Fixing Bacteria. Bulgarian Journal of Soil Science, Agrochemistry and Ecology, Sofia, BG, v. 50, n. 1, p. 21–25, 2016. Disponível em: https://agriacad.eu/ojs/index.php/bjssae/article/view/2035.. Acesso em: 6 oct. 2026.