@article{MOMA_1989__108_2-3_178434,
     author = {P. Billard},
     title = {L'espace usuel {C} ne possede aucun {R.U.C-systeme} orthonorme.},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {23--38},
     publisher = {mathdoc},
     volume = {108},
     number = {2-3},
     year = {1989},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1989__108_2-3_178434/}
}