%0 Journal Article %A N. Gherstega %A V. Orlov %A N. Vulpe %T A complete classification of quadratic differential systems according to the dimensions of $Aff(2,\mathbb R)$-orbits %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2009 %P 29-54 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2009_2_a2/ %G en %F BASM_2009_2_a2