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@article{MZ_1974__136_172030, author = {C.A. Stuart}, title = {Concave {Solutions} of {Singular} {Non-linear} {Differential} {Equations.}}, journal = {Mathematische Zeitschrift}, pages = {117--136}, publisher = {mathdoc}, volume = {136}, year = {1974}, zbl = {0281.47040}, url = {http://geodesic.mathdoc.fr/item/MZ_1974__136_172030/} }
C.A. Stuart. Concave Solutions of Singular Non-linear Differential Equations.. Mathematische Zeitschrift, Tome 136 (1974), pp. 117-136. http://geodesic.mathdoc.fr/item/MZ_1974__136_172030/