The ribosomal database project (RDP-II): introducing myRDP space and quality controlled public data. - James R. Cole; Benli Chai; Ryan J. Farris; Qiong Wang; A. S. Kulam-Syed-Mohideen; Donna M. McGarrell; A. M. Bandela; E. Cardenas; George M. Garrity; James M. Tiedje (Nucleic Acids Res., 2007)

The Ribosomal Database Project: improved alignments and new tools for rRNA analysis. - James R. Cole; Qiong Wang; E. Cardenas; Jordan A. Fish; Benli Chai; Ryan J. Farris; A. S. Kulam-Syed-Mohideen; Donna M. McGarrell; Terry L. Marsh; George M. Garrity; James M. Tiedje (Nucleic Acids Res., 2009)