J.  Cáceres-Martínez and Vásquez-Yeomans, R., ?Metazoan parasites and pearls in coexisting mussel species: Mytilus californianus, Mytilus galloprovincialis, and Septifer bifurcatus, from an exposed rocky shore in Baja California, Northwestern Mexico?, Veliger, vol. 42, pp. 10-16, 1999.

J.  Cáceres-Martínez and Vásquez-Yeomans, R., ?Metazoan parasites and pearls in coexisting mussel species: Mytilus californianus, Mytilus galloprovincialis, and Septifer bifurcatus, from an exposed rocky shore in Baja California, Northwestern Mexico?, Veliger, vol. 42, pp. 10-16, 1999.