@article{MZM_2004_76_1_a12,
     author = {K. M. Eminyan},
     title = {The $L_1${-Norm} of {a~Trigonometric} {Sum}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {133--143},
     publisher = {mathdoc},
     volume = {76},
     number = {1},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_76_1_a12/}
}