@article{IM2_2003_67_1_a9,
     author = {R. M. Trigub},
     title = {Approximation of functions by polynomials with {Hermitian} interpolation and restrictions on the coefficients},
     journal = {Izvestiya. Mathematics},
     pages = {183--206},
     year = {2003},
     volume = {67},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2003_67_1_a9/}
}