@article{MSH_1975__51__25_0,
     author = {Le Conte de Poly, C.},
     title = {Graphes d'amiti\'e et plans en blocs sym\'etriques},
     journal = {Math\'ematiques et sciences humaines},
     pages = {25--33},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {51},
     year = {1975},
     mrnumber = {396326},
     zbl = {0318.05116},
     language = {fr},
     url = {http://www.numdam.org/item/MSH_1975__51__25_0/}
}