Acevedo, A. A.; Silva, K. L.; Franco, R.; Lizcano, D. J. Distribution, Natural Histor Y and Conservation of the Not Very Well Known Marsupial Frog Gastrotheca Helenae (anura: Hemiphractidae) in the Tamá National Park, Colombia. Bol. cient. mus. hist. nat. univ. caldas 2011, 15, 68-74.