%0 Journal Article %A Révész, Gábor %T A simple proof of Vinogradov's theorem on the orderability of the free product of $o$-groups %J Czechoslovak Mathematical Journal %D 1987 %P 310-312 %V 37 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1987.102156/ %R 10.21136/CMJ.1987.102156 %G en %F 10_21136_CMJ_1987_102156