%0 Journal Article %A Adolfo Guillot %T Quadratic Differential Equations in Three Variables without Multivalued Solutions: Part I %J Symmetry, integrability and geometry: methods and applications %D 2018 %V 14 %U http://geodesic.mathdoc.fr/item/SIGMA_2018_14_a121/ %G en %F SIGMA_2018_14_a121