@article{ZNSL_1995_231_a1,
     author = {A. A. Ivanov},
     title = {Problems of the theory of bitopological spaces.~3},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {9--54},
     publisher = {mathdoc},
     volume = {231},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1995_231_a1/}
}