@article{10_4064_fm_139_2_75_89,
     author = {M. Giraudet and F. Lucas},
     title = {Groupes \`a moiti\'e ordonn\'es},
     journal = {Fundamenta Mathematicae},
     pages = {75--89},
     publisher = {mathdoc},
     volume = {139},
     number = {2},
     year = {1991},
     doi = {10.4064/fm-139-2-75-89},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-139-2-75-89/}
}