%0 Journal Article %A Harminc, Matúš %A Jakubík, Ján %T Maximal convergences and minimal proper convergences in $\ell$-groups %J Czechoslovak Mathematical Journal %D 1989 %P 631-640 %V 39 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102339/ %R 10.21136/CMJ.1989.102339 %G en %F 10_21136_CMJ_1989_102339