@article{FAA_1994_28_2_a16,
     author = {A. Szpirglas},
     title = {Boundary {Singularities} and {Symmetric} {Boundary} {Singularities}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {79--82},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1994_28_2_a16/}
}