Affiliation: | 1. Department of Mathematics, Faculty of Science and Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon, Thailand;2. Center for Vaccine Development and Research Center of Emerging Viral Diseases IRD, Mahidol University, Nakhon Pathom 73170, Thailand;3. Institute of Science and Technology for Research and Development, Mahidol University, Nakhon Pathom 73170, Thailand;4. Department of Physics, Faculty of Science, Mahidol University, Bangkok 10400, Thailand |