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@article{MZM_1978_24_2_a15, author = {B. A. Efimov}, title = {Supercardinality of spaces associated with ultrafilters}, journal = {Matemati\v{c}eskie zametki}, pages = {279--288}, publisher = {mathdoc}, volume = {24}, number = {2}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1978_24_2_a15/} }
B. A. Efimov. Supercardinality of spaces associated with ultrafilters. Matematičeskie zametki, Tome 24 (1978) no. 2, pp. 279-288. http://geodesic.mathdoc.fr/item/MZM_1978_24_2_a15/