%0 Journal Article
%A Fuat Usta 
							
%T Approximation of Functions by New Classes of Linear Positive Operators
								which Fix $\{1,\pi\}$ and $\{1,\pi^2\}$
%J Analele Universităţii "Ovidius" Constanţa Seria Matematică
%D 2020
%V XXVIII
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ASUO_2020_XXVIII_3_a18/
%F ASUO_2020_XXVIII_3_a18