@article{ZNSL_1982_122_a4,
     author = {A. A. Ivanov},
     title = {Bitopological spaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {30--55},
     publisher = {mathdoc},
     volume = {122},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1982_122_a4/}
}