^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Nagase T, Seki N, Ishikawa K, Ohira M, Kawarabayasi Y, Ohara O, Tanaka A, Kotani H, Miyajima N, Nomura N (May 1997). "Prediction of the coding sequences of unidentified human genes. VI. The coding sequences of 80 new genes (KIAA0201-KIAA0280) deduced by analysis of cDNA clones from cell line KG-1 and brain". DNA Res. 3 (5): 321–9, 341–54. doi:10.1093/dnares/3.5.321. PMID9039502.
^Ichiba T, Hoshi Y, Eto Y, Tajima N, Kuraishi Y (Oct 1999). "Characterization of GFR, a novel guanine nucleotide exchange factor for Rap1". FEBS Lett. 457 (1): 85–9. doi:10.1016/S0014-5793(99)01012-1. PMID10486569.