@article{ISU_2008_8_2_a0,
     author = {S. Ya. Pirmetova},
     title = {Approximative properties of mixed series by {Lagerre's} polynomials onclasses of smooth functions},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {3--11},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2008_8_2_a0/}
}