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@article{MASLO_1982__32_4_a15, author = {Elia\v{s}, Jozef}, title = {On the solutions of $n$-th order nonlinear differential equation in $L^2(0,\infty)$}, journal = {Mathematica slovaca}, pages = {427--434}, publisher = {mathdoc}, volume = {32}, number = {4}, year = {1982}, mrnumber = {676581}, zbl = {0516.34009}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1982__32_4_a15/} }
Eliaš, Jozef. On the solutions of $n$-th order nonlinear differential equation in $L^2(0,\infty)$. Mathematica slovaca, Tome 32 (1982) no. 4, pp. 427-434. http://geodesic.mathdoc.fr/item/MASLO_1982__32_4_a15/