@article{RM_1990_45_1_a13,
     author = {A. A. Kitbalyan},
     title = {The diameters of non-isotropic classes of functions of finite smoothness},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {213--215},
     publisher = {mathdoc},
     volume = {45},
     number = {1},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1990_45_1_a13/}
}