@article{SVFU_2021_28_4_a5,
     author = {A. G. Podgaev},
     title = {Compactness theorems connected with problems with unknown boundary},
     journal = {Matemati\v{c}eskie zametki SVFU},
     pages = {71--89},
     year = {2021},
     volume = {28},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SVFU_2021_28_4_a5/}
}