(1)
Vargas Zamora, J. A.; Acuña-Gonzalez, J.; Vásquez, F.; Sibaja-Cordero, J. A. Brachiopods, Sipunculans, Enteropneusts and Metals from Two Estuarine Tidal Flats, Pacific, Costa Rica. Rev. Biol. Trop. 2016, 64, 1311–1331.