@article{TM_1997_219_a22,
     author = {S. Yongsheng and W. Heping},
     title = {Representation and {Approximation} of {Multivariate} {Periodic} {Functions} with {Bounded} {Mixed} {Moduli} of {Smoothness}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {356--377},
     year = {1997},
     volume = {219},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_1997_219_a22/}
}