@article{MSH_1981__75__83_0,
     author = {Barthelemy, Jean-Pierre},
     title = {Trois propri\'et\'es des m\'edianes dans un treillis modulaire},
     journal = {Math\'ematiques et sciences humaines},
     pages = {83--91},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {75},
     year = {1981},
     mrnumber = {646578},
     zbl = {0474.06011},
     language = {fr},
     url = {http://archive.numdam.org/item/MSH_1981__75__83_0/}
}