Intramural neurons in the urinary bladder of hoplias spp. , Rana catesbeiana , trachemys dorbignyi and cavia porcellus. I. A quantitative study of the nerve cells - Liberti, Edson Aparecido; Novaes, R L C; Hernandez-Blazquez, Francisco Javier; Minarelli, A M; Intelizano, Wagner; Souza, Romeu Rodrigues de (Annales des Sciences Naturelles, Zoologie, 1996)