Bandyrskii, B. I., Makarov, V. L., & Romaniuk, N. M. (2026). Generalization of resonance equations for the Laguerre- and Legendre-type polynomials to the fourth-order equations. Ukrains’kyi Matematychnyi Zhurnal, 71(11), 1529-1538. https://doi.org/10.3842/umzh.v71i11.1533