Rfam: Wikipedia, clans and the "decimal" release. - Paul P. Gardner; Jennifer Daub; John G. Tate; Benjamin L. Moore; Isabelle H. Osuch; Sam Griffiths-Jones; Robert D. Finn; Eric P. Nawrocki; Diana L. Kolbe; Sean R. Eddy; Alex Bateman (Nucleic Acids Res., 2011)