@article{JMPA_1953_9_32__203_0,
     author = {Jaffard, Paul},
     title = {Contribution \`a l'\'etude des groupes ordonn\'es},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {203--280},
     year = {1953},
     volume = {9e s{\'e}rie, 32},
     mrnumber = {57869},
     zbl = {0051.01303},
     language = {fr},
     url = {https://www.numdam.org/item/JMPA_1953_9_32__203_0/}
}