@article{MAN_1970__190_162111,
     author = {P.F. CONRAD},
     title = {Free {Abelian} {I-groups} and {Vector} {Lattices.}},
     journal = {Mathematische Annalen},
     pages = {306--312},
     publisher = {mathdoc},
     volume = {190},
     year = {1970},
     zbl = {0213.31504},
     url = {http://geodesic.mathdoc.fr/item/MAN_1970__190_162111/}
}