1. Varieties of half lattice-ordered groups of monotonic permutations of chains Creator: Giraudet, Michèle and Rachůnek, Jiří Format: bez média and svazek Type: model:article and TEXT Subject: math, lattice-ordered groups, and monotonic permutations of chains Language: English Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public