@article{MSH_1979__67__39_0,
     author = {Schader, M.},
     title = {Distance minimale entre partitions et pr\'eordonnances dans un ensemble fini},
     journal = {Math\'ematiques et sciences humaines},
     pages = {39--47},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {67},
     year = {1979},
     zbl = {0419.04001},
     language = {fr},
     url = {http://archive.numdam.org/item/MSH_1979__67__39_0/}
}