@article{PDML_1988___3B_1_0,
     author = {Lesieur, L.},
     title = {Un ou deux exercices sur les matrices sym\'etriques},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {1--5},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     number = {3B},
     year = {1988},
     mrnumber = {1053163},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1988___3B_1_0/}
}