BilalovB. T., IsmailovM. I., and KasumovZ. A. “On Solvability of One Class of Third Order Differential Equations”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 73, no. 3, Mar. 2021, pp. 314 -28, doi:10.37863/umzh.v73i3.195.