%0 Journal Article %A Savaş, Ekrem %A Nuray, Fatih %T On $sigma$-statistically convergence and lacunary $sigma$-statistically convergence %J Mathematica slovaca %D 1993 %P 309-315 %V 43 %N 3 %U http://geodesic.mathdoc.fr/item/MASLO_1993_43_3_a4/ %G en %F MASLO_1993_43_3_a4