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@article{PIM_1990_N_S_48_62_a5, author = {J. L. Geluk}, title = {On {Slowly} {Varying} {Solutions} {Of} {The} {Linear} {Second} {Order} {Differential} {Equation}}, journal = {Publications de l'Institut Math\'ematique}, pages = {52 }, publisher = {mathdoc}, volume = {_N_S_48}, number = {62}, year = {1990}, url = {http://geodesic.mathdoc.fr/item/PIM_1990_N_S_48_62_a5/} }
J. L. Geluk. On Slowly Varying Solutions Of The Linear Second Order Differential Equation. Publications de l'Institut Mathématique, _N_S_48 (1990) no. 62, p. 52 . http://geodesic.mathdoc.fr/item/PIM_1990_N_S_48_62_a5/