%0 Journal Article %A N. Gherstega %A M. Popa %A V. Pricop %T About characteristics of graded algebras $S_{1,4}$ and $SI_{1,4}$ %J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica %D 2010 %P 23-32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/BASM_2010_1_a1/ %G en %F BASM_2010_1_a1