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@article{IM_1972__17_142159, author = {Jan-Erik Bj\"ork}, title = {The {Global} {Homological} {Dimension} of {Some} {Algebras} of {Differential} {Operators.}}, journal = {Inventiones mathematicae}, pages = {67--78}, publisher = {mathdoc}, volume = {17}, year = {1972}, zbl = {0241.12107}, url = {http://geodesic.mathdoc.fr/item/IM_1972__17_142159/} }
Jan-Erik Björk. The Global Homological Dimension of Some Algebras of Differential Operators.. Inventiones mathematicae, Tome 17 (1972), pp. 67-78. http://geodesic.mathdoc.fr/item/IM_1972__17_142159/