%0 Journal Article %A M. N. Popa %A V. V. Pricop %T Applications of algebraic methods in solving the center-focus problem %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2013 %P 45-71 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2013_1_a2/ %G en %F BASM_2013_1_a2