TY - JOUR AU - Walczak, Zbigniew TI - Approximation properties of certain linear positive operators in exponential weighted spaces of functions of two variables JO - Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica PY - 2003 SP - 131 EP - 138 VL - 42 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AUPO_2003__42_1_a10/ LA - en ID - AUPO_2003__42_1_a10 ER -