S. Siriphan, R. Sangmanee, S. Mama, S. kurung, N. Madkasem, and N. Singweratham, “Development and Effectiveness of PNU3 NSM Mask of Preventing COVID-19 Infection Transmission among Thai Muslim Men: Siriphan Siriphan”, Pnu Sci J, vol. 16, no. 1, pp. 42–58, Jan. 2024.