@article{TM_1997_219_a18,
     author = {K. I. Oskolkov},
     title = {Ridge {Approximation,} {Chebyshev--Fourier} {Analysis} and {Optimal} {Quadrature} {Formulas}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {269--285},
     publisher = {mathdoc},
     volume = {219},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1997_219_a18/}
}