Lawson D. Sexual dimorphism and reproduction of the pitviper Porthidium ophryomegas (Serpentes: Viperidae) in Guatemala. Rev. Biol. Trop. [Internet]. 1996Dec.1 [cited 2024Jul.17];44(3B):671–674. Available from: https://revistas.ucr.ac.cr/index.php/rbt/article/view/31026