%0 Journal Article %A Chajda, Ivan %A Länger, Helmut %T Orthomodular lattices that are horizontal sums of Boolean algebras %J Commentationes Mathematicae Universitatis Carolinae %D 2020 %P 11-20 %V 61 %N 1 %U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2020.003/ %R 10.14712/1213-7243.2020.003 %G en %F 10_14712_1213_7243_2020_003