@article{10_21136_CMJ_1965_100656,
     author = {Conrad, Paul F.},
     title = {The lattice of all convex $l$-subgroups of a lattice-ordered group},
     journal = {Czechoslovak Mathematical Journal},
     pages = {101--123},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1965},
     doi = {10.21136/CMJ.1965.100656},
     mrnumber = {0173716},
     zbl = {0135.06301},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1965.100656/}
}