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, and 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.