Martín-Cao-Romero, C., F. A. Solís-Marín, J. J. Alvarado, and A. Laguarda-Figueras. “New Record of the Starfish Ophidiaster Ludwigi (Echinodermata: Asteroidea) from the Pacific of Mexico and Costa Rica”. Revista De Biología Tropical, vol. 65, no. S1, Nov. 2017, pp. S253–S257, doi:10.15517/rbt.v65i1-1.31693.