GROZEVA, N. H.; GERDZHIKOVA, M. A.; PAVLOV, D.; PANAYOTOVA, G.; TODOROVA, M. Morphological variability of the Bulgarian endemic Betonica bulgarica Degen et Neic. (Lamiaceae) from Sinite Kamani Natural Park, Eastern Balkan Range. Acta Botanica Croatica, [S. l.], v. 75, n. 1, 2016. Disponível em: https://www.abc.botanic.hr/index.php/abc/article/view/1464. Acesso em: 30 jan. 2023.