@article{PSMIR_1973___2_A9_0,
     author = {Nourrigat, J. F.},
     title = {Probl\`emes d'\'evolution d\'eg\'en\'er\'es d'ordre 2},
     journal = {Publications des s\'eminaires de math\'ematiques et informatique de Rennes},
     note = {talk:9},
     pages = {1--2},
     publisher = {D\'epartement de Math\'ematiques et Informatique, Universit\'e de Rennes},
     number = {2},
     year = {1973},
     language = {fr},
     url = {http://www.numdam.org/item/PSMIR_1973___2_A9_0/}
}