PFAAT version 2.0: A tool for editing, annotating, and analyzing multiple sequence alignments. - Daniel R. Caffrey; Paul H. Dana; Vidhya Mathur; Marco Ocano; Eun-Jong Hong; Yaoyu E. Wang; Shyamal Somaroo; Brian E. Caffrey; Shobha Potluri; Enoch S. Huang (BMC Bioinform., 2007)