@article{10_4064_cm_17_1_161_164, author = { }, title = {Probl\`emes}, journal = {Colloquium Mathematicum}, pages = {161--164}, publisher = {mathdoc}, volume = {17}, number = {1}, year = {1967}, doi = {10.4064/cm-17-1-161-164}, language = {fr}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-17-1-161-164/} }