@article{MZM_1997_61_6_a13,
     author = {P. G. Grigor'ev},
     title = {On a sequence of trigonometric polynomials},
     journal = {Matemati\v{c}eskie zametki},
     pages = {935--938},
     publisher = {mathdoc},
     volume = {61},
     number = {6},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1997_61_6_a13/}
}