@article{ZNSL_2019_482_a1,
     author = {Ya. L. Gurieva and V. P. Il'in and A. V. Petukhov},
     title = {Multigrid methods for solving two-dimensional boundary-value problems},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {13--27},
     publisher = {mathdoc},
     volume = {482},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2019_482_a1/}
}