@article{CRMATH_2008__346_5-6_257_0, author = {Belkacem Bendiffalah}, title = {Sur la non-universalit\'e des couples exacts}, journal = {Comptes Rendus. Math\'ematique}, pages = {257--260}, publisher = {Elsevier}, volume = {346}, number = {5-6}, year = {2008}, doi = {10.1016/j.crma.2008.02.001}, language = {fr}, }