@article{MSH_1985__89__5_0,
     author = {Leclerc, Bruno},
     title = {Les hi\'erarchies de parties et leur demi-treillis},
     journal = {Math\'ematiques et sciences humaines},
     pages = {5--34},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {89},
     year = {1985},
     mrnumber = {800206},
     zbl = {0563.68060},
     language = {fr},
     url = {http://www.numdam.org/item/MSH_1985__89__5_0/}
}