Valuations and group algebras Ulrich Albrecht, Günter Törner (1998) Rendiconti del Seminario Matematico della Università di Padova
Values and minimal spectrum of an algebraic lattice George Georgescu, Miroslav Ploščica (2002) Mathematica Slovaca
Varieties of half lattice-ordered groups of monotonic permutations of chains Michèle Giraudet, Jiří Rachůnek (1999) Czechoslovak Mathematical Journal
Varieties of l -groups are torsion classes W. Charles Holland (1979) Czechoslovak Mathematical Journal
Verbandsgruppen, deren Komponentenverband kompakt erzeugt ist František Šik (1971) Archivum Mathematicum