%0 Journal Article %A Alas, Ofelia T. %T The axiom of choice and two particular forms of Tychonoff theorem %J Portugaliae mathematica %D 1969 %P 75-76 %V 28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1969__28_2_115084/ %G en %F PORMA_1969__28_2_115084