%0 Journal Article
%A Flaška, Václav
%A Jančařík, Antonín
%A Kala, Vítězslav
%A Kepka, Tomáš
%T Trees in commtative nil-semigroups of index two
%J Acta Universitatis Carolinae. Mathematica et Physica
%D 2007
%P 81-101
%V 48
%N 1
%I mathdoc
%U https://geodesic-test.mathdoc.fr/item/AUCMP_2007__48_1_a6/
%G en
%F AUCMP_2007__48_1_a6