@article{EJDE_2014__2014__a81,
     author = {Artes, Joan C. and Llibre, Jaume and Schlomiuk, Dana and Vulpe, Nicolae},
     title = {Geometric configurations of singularities for quadratic differential systems with total finite multiplicity $m_f=2$},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2014},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a81/}
}