@article{CRMATH_2004__338_7_539_0, author = {Bourgain, Jean and Brezis, Ha{\"\i}m}, title = {New estimates for the {Laplacian,} the div{\textendash}curl, and related {Hodge} systems}, journal = {Comptes Rendus. Math\'ematique}, pages = {539--543}, publisher = {Elsevier}, volume = {338}, number = {7}, year = {2004}, doi = {10.1016/j.crma.2003.12.031}, language = {en}, url = {http://www.numdam.org/articles/10.1016/j.crma.2003.12.031/} }