Doan, P.L. et al. 2024. Studying factors affecting the processing of lychee juice (Litchi chinensis S.) supplemented with roselle calyx (Hibiscus sabdariffa L.). Dong Thap University Journal of Science. 14, 2 (Dec. 2024), 93–103. DOI:https://doi.org/10.52714/dthu.14.2.2025.1468.