@article{AIHPC_1986__3_2_111_0,
     author = {Bonckaert, Patrick},
     title = {Smooth invariant curves of singularities of vector fields on $\mathbb {R}^3$},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {111--183},
     publisher = {Gauthier-Villars},
     volume = {3},
     number = {2},
     year = {1986},
     mrnumber = {837232},
     zbl = {0597.58021},
     language = {en},
     url = {http://www.numdam.org/item/AIHPC_1986__3_2_111_0/}
}