%0 Journal Article %A Mrówka, S. %A Tan, H. P. %T Sequences of disjoint open sets %J Czechoslovak Mathematical Journal %D 1972 %P 517-521 %V 22 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1972.101122/ %R 10.21136/CMJ.1972.101122 %G en %F 10_21136_CMJ_1972_101122