%0 Journal Article %A Rachůnek, Jiří %T MV-algebras are categorically equivalent to a class of $\scr{DR}l\sb {1(i)}$-semigroups %J Mathematica Bohemica %D 1998 %P 437-441 %V 123 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.1998.125964/ %R 10.21136/MB.1998.125964 %G en %F 10_21136_MB_1998_125964