Dufour, D., de la Peña, M., Gago, S., Flores, R., & Gallego, J. (2009). Structure–function analysis of the ribozymes of chrysanthemum chlorotic mottle viroid: A loop–loop interaction motif conserved in most natural hammerheads. Oxford University Press.

Dufour, David, Marcos de la Peña, Selma Gago, Ricardo Flores, e José Gallego. Structure–function Analysis of the Ribozymes of Chrysanthemum Chlorotic Mottle Viroid: A Loop–loop Interaction Motif Conserved in Most Natural Hammerheads. Oxford University Press, 2009.

Dufour, David, et al. Structure–function Analysis of the Ribozymes of Chrysanthemum Chlorotic Mottle Viroid: A Loop–loop Interaction Motif Conserved in Most Natural Hammerheads. Oxford University Press, 2009.