%0 Journal Article %A Bartík, Vojtěch %A Markl, Martin %T On bijectivity of the canonical transformation $[\beta_G X;Y]_G \to [X;Y]_G$ %J Czechoslovak Mathematical Journal %D 1988 %P 682-700 %V 38 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102264/ %R 10.21136/CMJ.1988.102264 %G en %F 10_21136_CMJ_1988_102264