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@article{PIM_1978_N_S_24_38_a24, author = {W. R. Utz}, title = {"Properties {Of} {Solutions} {Of} {The} {Differential} {Equation} x x""-k x' {\texttwosuperior}+f(x)=0"}, journal = {Publications de l'Institut Math\'ematique}, pages = {189 }, publisher = {mathdoc}, volume = {_N_S_24}, number = {38}, year = {1978}, url = {http://geodesic.mathdoc.fr/item/PIM_1978_N_S_24_38_a24/} }
W. R. Utz. "Properties Of Solutions Of The Differential Equation x x""-k x' ²+f(x)=0". Publications de l'Institut Mathématique, _N_S_24 (1978) no. 38, p. 189 . http://geodesic.mathdoc.fr/item/PIM_1978_N_S_24_38_a24/