@article{VMUMM_1996_6_a7,
     author = {I. V. Belyakov and A. M. Stepin},
     title = {Extremal properties of multidimensional {Chebyshev} mappings},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {22--24},
     publisher = {mathdoc},
     number = {6},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1996_6_a7/}
}