Brenley K. McIntosh, Daniel P. Renfro, Gwendowlyn S. Knapp, Chanchala R. Lairikyengbam, Nathan M. Liles, Lili Niu, Amanda M. Supak, Anand Venkatraman, Adrienne E. Zweifel, Deborah A. Siegele, James C. Hu
Nucleic Acids Res. 2012 Jan; 40(Database issue): D1270–D1277. Published online 2011 Nov 7. doi: 10.1093/nar/gkr880