The viroid and viroid-like RNA database. - Daniel A. Lafontaine; Patrick Deschênes; Frédéric Bussière; Véronique Poisson; Jean-Pierre Perreault (Nucleic Acids Res., 1999)

The database of the smallest known auto-replicable RNA species: viroids and viroid-like RNAs. - Martin Pelchat; Patrick Deschênes; Jean-Pierre Perreault (Nucleic Acids Res., 2000)