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@article{MM2_1996__89_3_156168, author = {S. Berhanu and A. Meziani}, title = {On {Rotaionally} invariant vector fields in the plane.}, journal = {Manuscripta mathematica}, pages = {355--372}, publisher = {mathdoc}, volume = {89}, number = {3}, year = {1996}, zbl = {0858.35021}, url = {http://geodesic.mathdoc.fr/item/MM2_1996__89_3_156168/} }
S. Berhanu; A. Meziani. On Rotaionally invariant vector fields in the plane.. Manuscripta mathematica, Tome 89 (1996) no. 3, pp. 355-372. http://geodesic.mathdoc.fr/item/MM2_1996__89_3_156168/