The PSSH database of alignments between protein sequences and tertiary structures. - Andrea Schafferhans; Joachim E. W. Meyer; Seán I. O'Donoghue (Nucleic Acids Res., 2003)

The SRS 3D module: integrating structures, sequences and features. - Seán I. O'Donoghue; Joachim E. W. Meyer; Andrea Schafferhans; Karsten Fries (Bioinform., 2004)