Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1990_5_a9, author = {M. G. Tkachenko}, title = {Countably compact and pseudocompact topologies on free abelian groups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {68--75}, publisher = {mathdoc}, number = {5}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1990_5_a9/} }
M. G. Tkachenko. Countably compact and pseudocompact topologies on free abelian groups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1990), pp. 68-75. http://geodesic.mathdoc.fr/item/IVM_1990_5_a9/