@article{VMUMM_1997_4_a4,
     author = {V. M. Tikhomirov},
     title = {On extremal subspaces for classes of functions defined by kernels that do not increase oscillation},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {16--19},
     publisher = {mathdoc},
     number = {4},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1997_4_a4/}
}