@article{VMUMM_1991_1_a18,
     author = {A. P. Kombarov},
     title = {Pseudonormality of $F_\sigma$-subsets $X^2\setminus\Delta$},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {85--87},
     publisher = {mathdoc},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_1_a18/}
}