@article{MABA_1991_5_3_a5,
     author = {E. M. Galeev},
     title = {Bernstein {Diameters} for the {Classes} of {Periodic} {Functions} of {Several} {Variables}},
     journal = {Mathematica balkanica},
     pages = {229},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1991},
     url = {http://geodesic.mathdoc.fr/item/MABA_1991_5_3_a5/}
}