@article{10_4064_fm_139_2_99_117,
     author = {John Dauns},
     title = {Torsion free types},
     journal = {Fundamenta Mathematicae},
     pages = {99--117},
     publisher = {mathdoc},
     volume = {139},
     number = {2},
     year = {1991},
     doi = {10.4064/fm-139-2-99-117},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-139-2-99-117/}
}