@article{SM_1996_187_11_a5,
     author = {V. A. Yudin},
     title = {Two external problems for trigonometric polynomials},
     journal = {Sbornik. Mathematics},
     pages = {1721--1736},
     publisher = {mathdoc},
     volume = {187},
     number = {11},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1996_187_11_a5/}
}