@article{GDZPPN002237628,
title = {On Rotaionally invariant vector fields in the plane.},
journal = {Manuscripta mathematica},
volume = {91},
year = {1996},
pages = {355-372},
zbl = {0858.35021},
url = {http://dml.mathdoc.fr/item/GDZPPN002237628}
}
Berhanu, S.; Meziani, A. On Rotaionally invariant vector fields in the plane.. Manuscripta mathematica, Tome 91 (1996) pp. 355-372. http://gdmltest.u-ga.fr/item/GDZPPN002237628/