Gluyas-Millán, MG, et al. “Differences in the Length-Age Relationship of the Snail Astraea Undosa (Wood, 1828) Between Two Localities of Tortugas Bay, Baja California Sur, Mexico”. Ciencias Marinas, vol. 25, no. 1, Mar. 1999, pp. 91-106, doi:10.7773/cm.v25i1.647.