M. D. L. Penha, J. L. C. Dias, and B. . E. Malucelli, “Influence of low environmental temperature on the phagocytic activity of bullfrog (Rana catesbeiana) thrombocytes”, Braz. J. Vet. Res. Anim. Sci., vol. 33, no. 1, pp. 15–18, Mar. 1996, doi: 10.11606/issn.2318-3659.v33i1p15-18.