Atma, Y. et al. 2019. Dipeptidyl Peptidase IV (DPP-IV) Inhibitory Activity of Ultrafiltration and Gel Filtration Fraction of Gelatin Hydrolyaste Derived from Bone of Fish for Antidiabetes. International Journal on Advanced Science, Engineering and Information Technology. 9, 6 (Dec. 2019), 2096–2103. DOI:https://doi.org/10.18517/ijaseit.9.6.10658.