<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Altschul, Stephen F. / Madden, Thomas L. / Alejandro A. Schäffer / Zhang, Jinghui / Zhang, Zheng / Miller, Webb / Lipman, David J. (1997)</hi>: <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">“Gapped BLAST and PSI-BLAST: a new generation of protein database search programs”</hi> in Nucleic Acids Res 25 (3389-3402).