LELE, K.; MAITHY, P.; MANDAL, J. In situ spores from Lower Gondwana ferns- their morphology and variation. Journal of Palaeosciences, [S. l.], v. 28, p. 128–154, 1981. DOI: 10.54991/jop.1981.1408. Disponível em: https://jpsonline.co.in/index.php/jop/article/view/1408. Acesso em: 8 may. 2024.