@article{VMUMM_1989_4_a24,
     author = {A. N. Yakivchik},
     title = {On tightenings of a product of finally compact spaces},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {84--86},
     year = {1989},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1989_4_a24/}
}