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@article{DAN_1969_189_3_a3, author = {A. G. El'kin}, title = {Irreducible spaces, and ultrafilters topologically dense in themselves}, journal = {Doklady Akademii Nauk}, pages = {464--467}, publisher = {mathdoc}, volume = {189}, number = {3}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_189_3_a3/} }
A. G. El'kin. Irreducible spaces, and ultrafilters topologically dense in themselves. Doklady Akademii Nauk, Tome 189 (1969) no. 3, pp. 464-467. http://geodesic.mathdoc.fr/item/DAN_1969_189_3_a3/