LELE, K.; SRIVASTAVA, A. Morphological and structural studies on some Barakar megaspores. Journal of Palaeosciences, [S. l.], v. 31, n. (1-3), p. 1–12, 1990. DOI: 10.54991/jop.1983.1703. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/1703. Acesso em: 23 jul. 2024.