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”. Vietnam Journal of Science, Technology and Engineering, vol. 68, no. 1, Mar. 2026, doi:10.31276/VJSTE.2025.0047.