@article{TRSPY_1972_128_a0,
     author = {A. D. Aleksandrov},
     title = {Mappings of ordered {spaces.~I}},
     journal = {Informatics and Automation},
     pages = {3--21},
     publisher = {mathdoc},
     volume = {128},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1972_128_a0/}
}