pKNOT: the protein KNOT web server. - Yan-Long Lai; Shih-Chung Yen; Sung-Huan Yu; Jenn-Kang Hwang (Nucleic Acids Res., 2007)

pKNOT v.2: the protein KNOT web server. - Yan-Long Lai; Chih-Chieh Chen; Jenn-Kang Hwang (Nucleic Acids Res., 2012)