@article{10_4064_ap_25_1_99_101,
     author = {Zenon Moszner},
     title = {Sur les deux notions de l'invariant caract\'eristique},
     journal = {Annales Polonici Mathematici},
     pages = {99--101},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {1971},
     doi = {10.4064/ap-25-1-99-101},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-25-1-99-101/}
}