Valverde, R. A., K. W. Selcer, L. Rólier Lara, and J. A. Sibaja-Cordero. “Lack of Xenoestrogen-Induced Vitellogenin in Male Olive Ridley Sea Turtles (<i>Lepidochelys olivacea</i≫) from the Pacific Coast of Costa Rica”. Revista De Biología Tropical, vol. 56, no. S4, Dec. 2008, pp. 49–57, doi:10.15517/rbt.v56i4.27203.