@article{MSH_1975__49__43_0,
     author = {Lapscher, F.},
     title = {Utilisation des matrices bool\'eennes pour l'\'etude des treillis de post},
     journal = {Math\'ematiques et sciences humaines},
     pages = {43--73},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {49},
     year = {1975},
     mrnumber = {376472},
     zbl = {0328.06006},
     language = {fr},
     url = {http://www.numdam.org/item/MSH_1975__49__43_0/}
}