S BIJU, K. V. S. B. S. K. J. G. Piper hapnium : A rare Piper species from Peruvannamuzhi, Kerala - A new report. Journal of Spices and Aromatic Crops, [S. l.], v. 10, n. 1, p. 63–64, 2001. Disponível em: https://updatepublishing.com/journal/index.php/josac/article/view/4593. Acesso em: 3 may. 2024.