Gutiérrez-Marco, J. C ; Goldman, D ; Reyes-Abril, Jaime. Gutiérrez-Marco, J.C., Goldman, D., Reyes-Abril, J., Gómez, J. (2011). A preliminary study of some Sandbian (Upper Ordovician) grapholites from Venezuela. En: Ordovician of the World. Instituto Geológico y Minero. p. 199-206..
,
2011
Reyes-Abril, Jaime ; Gutiérrez-Marco, J. C ; Villas, Enrique Reyes-Abri, J., Gutiérrez-Marco, J.C., Villas, E. (2011). Biostratigraphy of the Middle Ordovician Brachiopods from Central Spain. En: Ordovician of the World. Instituto Geológico y Minero. p. 463-472..
,
2011