1. Über die Vervollständigung geordneter Gruppen;Banaschewski, Bernhard;Math. Nachr.,1957
2. American Mathematical Society Colloquium Publications, Vol. 25;Birkhoff, Garrett,1948
3. The interval topology of a lattice ordered group;Choe, Tae Ho;Kyungpook Math. J.,1958
4. The structure of a lattice-ordered group with a finite number of disjoint elements;Conrad, Paul;Michigan Math. J.,1960
5. Konvexe Ketten in 𝑙-Gruppen;Jakubík, Ján;\v{C}asopis P\v{e}st. Mat.,1959