@article{PDML_1979__16_3-4_13_0,
     author = {Blanc, Georges},
     title = {Th\'eories des types de graphes},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {13--20},
     year = {1979},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {16},
     number = {3-4},
     mrnumber = {602649},
     zbl = {0468.03044},
     language = {fr},
     url = {https://www.numdam.org/item/PDML_1979__16_3-4_13_0/}
}