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@article{PORMA_1969__28_2_115084, author = {Alas, Ofelia T.}, title = {The axiom of choice and two particular forms of {Tychonoff} theorem}, journal = {Portugaliae mathematica}, pages = {75--76}, publisher = {mathdoc}, volume = {28}, number = {2}, year = {1969}, mrnumber = {0281600}, zbl = {0211.25201}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1969__28_2_115084/} }
Alas, Ofelia T. The axiom of choice and two particular forms of Tychonoff theorem. Portugaliae mathematica, Tome 28 (1969) no. 2, pp. 75-76. http://geodesic.mathdoc.fr/item/PORMA_1969__28_2_115084/