TREEYAPRASERT, T.; THANAPHATIKUN, K.; POLTAWEE, K.; PERMPOONPORNSIN, V. The General Solutions of Fourth Order Cauchy-Euler Equations Using Sumudu Transform. Thai Journal of Science and Technology, Pathumthani, Thailand, v. 12, n. 2, p. 66–77, 2024. DOI: 10.14456/tjst.2024.7. Disponível em: https://li01.tci-thaijo.org/index.php/tjst/article/view/262638. Acesso em: 16 sep. 2026.