[a] G. Birkhoff: Lattice Theory. Amer. Math. Soc. Colloq. Publ., first edition 1940; second edition 1948; third edition 1967, Providence, R. I. Zbl 0063.00402

[b] L. Fuchs: Partially ordered algebraic systems. Pergamon Press, Oxford-London-New York-Paris 1963. MR 0171864 | Zbl 0137.02001

[c] Ch. Holland: Varieties of $l$-groups are torsion classes. Czech. Math. J. 29 (104) (1979), 11- 12. MR 0518135 | Zbl 0432.06011

[d] Л. B. Канторович Б. 3. Byлих A. Г. Пинскер: Функциональный анализ в полуупорядоҹеннык пространствах. Москва 1950.

[e] М. Коlibiаг: Professor Ján Jakubík quinquagenarian. (Slovak) Matem. časopis 23 (1973), 295-296. MR 0325331

[f] M. Kolibiar: Academician Ján Jakubík awarded the Klement Gottwald state prize. Czech. Math. J. 29 (104) (1979), 664-665. MR 0548227

[g] A. И. Малыyев: Об упорядоченных группах. Изв. Акад. Наук СССР, серия матем. 13 (1949), 473-482. MR 0032645 | Zbl 0041.29502

[h] J. Martinez: Torsion theory for lattice ordered groups. Czech. Math. J. 25 (100) (1975), 284-299. MR 0389705 | Zbl 0321.06020

[i] F. Šik: Slovak state prizes awarded. Czech. Math. J. 20 (5) (1970), 349- 351.