David W. Ritchie Dima Kozakov Sandor Vajda Accelerating and focusing protein-protein docking correlations using multi-dimensional rotational FFT generating functions. 1865-1873 2008 24 Bioinformatics 17 http://dx.doi.org/10.1093/bioinformatics/btn334 db/journals/bioinformatics/bioinformatics24.html#RitchieKV08