Du Duy Bui*, Tho Phuoc Tran, Kien Trung Chu, and Tuan Nghiem Anh Le, Giang Ngoc Doan, “Preparation of preservative product for Xuong Com Vang longan based on chitosan and the oligochitosan-iodine complex”, VJSTE, vol. 68, no. 1, Mar. 2026.