ZIZKA, Georg. Herbert Becela verstorben. Der Palmengarten, [S. l.], v. 80, n. 2, p. 162–163, 2016. DOI: 10.21248/palmengarten.339. Disponível em: https://ojs.ub.uni-frankfurt.de/Palmengarten/index.php/Palmengarten/article/view/339. Acesso em: 17 mai. 2024.