@article{CMJ_2002__52_4_a18,
     author = {Jakub{\'\i}k, J\'an},
     title = {On orthogonally $\sigma$-complete lattice ordered groups},
     journal = {Czechoslovak Mathematical Journal},
     pages = {881--888},
     publisher = {mathdoc},
     volume = {52},
     number = {4},
     year = {2002},
     mrnumber = {1940067},
     zbl = {1012.06019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2002__52_4_a18/}
}