S. Jaccard, M. Münster, P. O. Baumgartner, C. Baumgartner-Mora, y P. Denyer, «Barra Honda (Upper Paleocene- Iower Eocene) and el Viejo (Campanian-Maastrichtian) carbonate platforms in the Tempisque Area (Guanacaste, Costa Rica)», Rev. Geol. Amér. Central, vol. 24, jun. 2011.