%0 Journal Article %A N. Gherstega %A V. Orlov %T Classification of $Aff(2,\mathbb R)$-orbit's dimensions for quadratic differential system %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2008 %P 122-126 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2008_2_a13/ %G en %F BASM_2008_2_a13