L. A. Vega-Corrales, “POPULATION EVALUATION OF THE EXPLOTABLE STOCK OF THE OPISTHONEMA COMPLEX (PISCES: CLUPEIDAE) IN THE GULF OF NICOYA, COSTA RICA”, Rev. Cien. Mar. Cost., vol. 2, pp. 83–94, Dec. 2010, doi: 10.15359/revmar.2.7.