Treeyaprasert, T., Thanaphatikun, K. , Poltawee, K. and Permpoonpornsin, V. 2024. The General Solutions of Fourth Order Cauchy-Euler Equations Using Sumudu Transform. Thai Journal of Science and Technology. 12, 2 (Jun. 2024), 66–77. DOI:https://doi.org/10.14456/tjst.2024.7.