@article{TRSPY_1965_78_a0,
     author = {S. T. Zavalishchin},
     title = {On some extremal properties of trigonometric polynomials},
     journal = {Informatics and Automation},
     pages = {3--11},
     publisher = {mathdoc},
     volume = {78},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1965_78_a0/}
}