@article{10_4064_cm_33_1_159_160, author = { }, title = {Probl\`emes}, journal = {Colloquium Mathematicum}, pages = {159--160}, year = {1975}, volume = {33}, number = {1}, doi = {10.4064/cm-33-1-159-160}, language = {fr}, url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-33-1-159-160/} }