@article{ARM_1968__4_3_a4,
     author = {Froda-Schechter, Micheline},
     title = {Sous-groupes et groupes quotients d'un groupe pr\'eordonn\'e},
     journal = {Archivum mathematicum},
     pages = {187--192},
     publisher = {mathdoc},
     volume = {04},
     number = {3},
     year = {1968},
     mrnumber = {0269568},
     zbl = {0211.04503},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/ARM_1968__4_3_a4/}
}