S. Taarabti, Z. . El Allali, and K. . Ben Haddouch, “On $\mathcal{p}(x)$-Kirchhoff-type equation involving $\mathcal{p}(x)$-biharmonic operator via genus theory”, Ukr. Mat. Zhurn., vol. 72, no. 6, pp. 842–851, Jun. 2020, doi: 10.37863/umzh.v72i6.6019.