The SUPERFAMILY 1.75 database in 2014: a doubling of data. - Matt E. Oates; Jonathan Stahlhacke; Dimitrios V. Vavoulis; Ben Smithers; Owen J. L. Rackham; Adam J. Sardar; Jan Zaucha; Natalie Thurlby; Hai Fang; Julian Gough (Nucleic Acids Res., 2015)