@article{MABA_2002_16_1-4_a19,
     author = {Yu. Brudnyi},
     title = {Nonlinear {Piecewise} {Polynomial} {Approximation} of {Functions} from {Besov} {Spaces}},
     journal = {Mathematica balkanica},
     pages = {339},
     publisher = {mathdoc},
     volume = {16},
     number = {1-4},
     year = {2002},
     url = {http://geodesic.mathdoc.fr/item/MABA_2002_16_1-4_a19/}
}