@article{10_4064_cm_22_2_335_338, author = { }, title = {Probl\`emes (vol. {XXII,} fasc. 2)}, journal = {Colloquium Mathematicum}, pages = {335--338}, publisher = {mathdoc}, volume = {22}, number = {2}, year = {1970}, doi = {10.4064/cm-22-2-335-338}, language = {fr}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-22-2-335-338/} }