@article{MZM_1977_22_5_a7,
     author = {R. S. Ismagilov and Kh. Nasyrova},
     title = {Diameters of a~class of smooth functions in the space $L_2$},
     journal = {Matemati\v{c}eskie zametki},
     pages = {671--678},
     publisher = {mathdoc},
     volume = {22},
     number = {5},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1977_22_5_a7/}
}