@article{DAN_1961_136_1_a6,
     author = {I. S. Kukles and A. M. Suyarshaev},
     title = {Frommer's generalized method},
     journal = {Doklady Akademii Nauk},
     pages = {29--32},
     publisher = {mathdoc},
     volume = {136},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_136_1_a6/}
}