@article{DAN_1980_250_3_a4,
     author = {I. I. Golichev},
     title = {Approximation of the solution of some boundary-value and mixed problems},
     journal = {Doklady Akademii Nauk},
     pages = {535--539},
     publisher = {mathdoc},
     volume = {250},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_250_3_a4/}
}