GPCR-SSFE: A comprehensive database of G-protein-coupled receptor template predictions and homology models. - Catherine L. Worth; Annika Kreuchwig; Gunnar Kleinau; Gerd Krause (BMC Bioinform., 2011)

GPCR-SSFE 2.0 - a fragment-based molecular modeling web tool for Class A G-protein coupled receptors. - Catherine L. Worth; Franziska Kreuchwig; Johanna K. S. Tiemann; Annika Kreuchwig; Michele Ritschel; Gunnar Kleinau; Peter W. Hildebrand; Gerd Krause (Nucleic Acids Res., 2017)