@article{DAN_1985_280_5_a7,
     author = {O. A. Liskovets},
     title = {Discrete convergence of elements and operators for ill-posed},
     journal = {Doklady Akademii Nauk},
     pages = {1058--1062},
     publisher = {mathdoc},
     volume = {280},
     number = {5},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_280_5_a7/}
}