@article{IM2_1989_33_2_a8,
     author = {V. K. Dzyadyk and L. A. Ostrovetskii},
     title = {A~polynomial approximation method for the solution of a~boundary value problem and its derivatives for linear ordinary differential equations},
     journal = {Izvestiya. Mathematics },
     pages = {391--402},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1989},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1989_33_2_a8/}
}