K. Ar-sanork, L. Wongbuth, C. Karuwan, N. Surapanich, P. Wilairat, and P. Chaisuwan, “RAPID ANALYSIS OF CAFFEINE AND PARACETAMOL USING MICRO-LIQUID CHROMATOGRAPHY WITH MIXED MODE MONOLITHIC COLUMN”, Suranaree J Sci Technol, vol. 28, no. 2, pp. 030041(1–6), Aug. 2026.