M. Gluyas-Millán, C. Quiñónez-Velázquez, J. Massó-Rojas, and F. Melo-Barrera, “Differences in the length-age relationship of the snail Astraea undosa (Wood, 1828) between two localities of Tortugas Bay, Baja California Sur, Mexico”, Cienc. Mar., vol. 25, no. 1, pp. 91–106, Mar. 1999.