E. Y. Sari, A. D. Guritno, and A. C. Sukartiko, “Risk Assessment on Supply Chain of the Geographical Indication Granulated Coconut Sugar in Kulon Progo Regency, Special Region of Yogyakarta, Indonesia”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 11, no. 1, pp. 236–243, Feb. 2021.