V. V. Tuan, T. M. Linh, B. T. H. Lam, N. H. T. Khai, and D. T. Huyen, “DEVELOPMENT OF A RAPID COLORIMETRIC PAPER-BASED TEST KIT FOR ON-SITE SCREENING OF PARABENS IN COSMETIC AND HEALTHCARE PRODUCTS”, Ver. Dir., vol. 22, p. e223672, Nov. 2025.