Mentlein, R; Gallwitz, B; Schmidt, WE. Dipeptidyl-peptidase IV hydrolyses gastric inhibitory polypeptide, glucagon-like peptide-1(7-36)amide, peptide histidine methionine and is responsible for their degradation in human serum. European journal of biochemistry / FEBS. 1993, 214 (3): 829–35. PMID 8100523. doi:10.1111/j.1432-1033.1993.tb17986.x.
Mentlein, R; Gallwitz, B; Schmidt, WE. Dipeptidyl-peptidase IV hydrolyses gastric inhibitory polypeptide, glucagon-like peptide-1(7-36)amide, peptide histidine methionine and is responsible for their degradation in human serum. European journal of biochemistry / FEBS. 1993, 214 (3): 829–35. PMID 8100523. doi:10.1111/j.1432-1033.1993.tb17986.x.