@article{IM2_2007_71_5_a1,
     author = {S. N. Kudryavtsev},
     title = {Approximation and reconstruction of the derivatives of functions satisfying mixed {H\"older} conditions},
     journal = {Izvestiya. Mathematics },
     pages = {895--938},
     publisher = {mathdoc},
     volume = {71},
     number = {5},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2007_71_5_a1/}
}