A.J. Moody, L. Thim, and I. Valverde, FEBS Lett., 172, 142 (1984). (Original)
N. Fujii, M. Sakurai, K. Akaji, M. Nomizu, H. Yajima, K. Mizuta, M. Aono, M. Moriga, K. Inoue, R. Hosotani, and T. Tobe, Chem. Pharm. Bull., 34, 2397 (1986). (Glucose-dependent Insulinotropic Polypeptide)
J.E. Jorpes and V. Mutt (eds.) Secretin, Cholecystokinin, Pancreozymin and Gastrin, Handbook of Experimental Pharmacology, Vol. 34, Springer-Verlag, Berlin, 1973. (Review)