@article{MSH_1991__116__29_0,
     author = {Parrochia, Daniel},
     title = {Trames, classifications, d\'efinitions},
     journal = {Math\'ematiques informatique et sciences humaines},
     pages = {29--46},
     publisher = {Ecole des hautes-\'etudes en sciences sociales},
     volume = {116},
     year = {1991},
     mrnumber = {1167761},
     zbl = {0794.03010},
     language = {fr},
     url = {http://www.numdam.org/item/MSH_1991__116__29_0/}
}