Nguyen, Thanh Dat, et al. “DEVELOPMENT OF AN ARTIFICIAL NEURAL NETWORK MODEL FOR RAPID DETERMINATION OF NAOH SOLUTION CONCENTRATION USING THE TRANSMISSION SPECTRUM OF LOW-ENERGY GAMMA RAYS AT 59.54 KEV”. Ho Chi Minh City University of Education Journal of Science, vol. 23, no. 1, Jan. 2026, pp. 150-62, doi:10.54607/hcmue.js.23.1.5093(2026).