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. S2CID20296877.
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. S2CID20296877.
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. S2CID20296877.