Geodesic
Approximation of functions of the class $W_p^l(\Omega)$
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Boundary value problems of mathematical physics. Part 4, Tome 92 (1966), pp. 50-56 
K. K. Golovkin. Approximation of functions of the class $W_p^l(\Omega)$. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Boundary value problems of mathematical physics. Part 4, Tome 92 (1966), pp. 50-56. http://geodesic.mathdoc.fr/item/TM_1966_92_a3/
@article{TM_1966_92_a3,
     author = {K. K. Golovkin},
     title = {Approximation of functions of the class $W_p^l(\Omega)$},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {50--56},
     year = {1966},
     volume = {92},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1966_92_a3/}
}
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%D 1966
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%F TM_1966_92_a3

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