@article{GDZPPN002340011, title = {Compensated compactness and the Heisenberg group.}, journal = {Mathematische Annalen}, volume = {300}, year = {1994}, pages = {451-462}, zbl = {0819.43006}, url = {http://dml.mathdoc.fr/item/GDZPPN002340011} }
Grafakos, Loukas; Rochberg, Richard. Compensated compactness and the Heisenberg group.. Mathematische Annalen, Tome 300 (1994) pp. 451-462. http://gdmltest.u-ga.fr/item/GDZPPN002340011/