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@article{CM_1980__40_3_417_0, author = {Lang, William E.}, title = {Two theorems on de {Rham} cohomology}, journal = {Compositio Mathematica}, pages = {417--423}, publisher = {Sijthoff et Noordhoff International Publishers}, volume = {40}, number = {3}, year = {1980}, mrnumber = {571059}, zbl = {0508.14011}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CM_1980__40_3_417_0/} }
Lang, William E. Two theorems on de Rham cohomology. Compositio Mathematica, Tome 40 (1980) no. 3, pp. 417-423. http://geodesic.mathdoc.fr/item/CM_1980__40_3_417_0/