Gruppa Aut (X) vsjech avtomorfizmov X, to jesť množestvo vsjech vzaimnoodnoznačnych otobraženij g množestva X na sebja, sochranjajuščich otnošenie porjadka na X. Inymi slovami, každyj elemjent g iz Aut (X) obladajet svojstvom.
In the paper, m-groups, i.e. lattice ordered groups with an involutory antitonic group automorphism, are studied. In particular, the variety of normal-valued m-groups is decribed. (en)