@article{DAN_1964_158_5_a10,
     author = {V. T. Kharin},
     title = {An approximate method of solving boundary-value problems for linear equations with analytic coefficients},
     journal = {Doklady Akademii Nauk},
     pages = {1044--1047},
     publisher = {mathdoc},
     volume = {158},
     number = {5},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_5_a10/}
}