Q. T. Dang, C. H. Le, D. T. Vuong, and V. C. Vu, “RESULTS OF TESTING FOR DISTINCTIVENESS, UNIFORMITY AND STABILITY (DUS) FOR THE Hibiscus sabdariffa L. var BTB1 IN THANH HOA”, HDUJS, vol. 86, no. 4, pp. 35-43, Apr. 2026.