@article{VMP_2018_19_2_a5,
     author = {O. B. Arushanyan and S. F. Zaletkin},
     title = {To the orthogonal expansion theory of the solution to the {Cauchy} problem for second-order ordinary differential equations},
     journal = {Numerical methods and programming},
     pages = {178--184},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2018_19_2_a5/}
}