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@article{IM_1976__33_142376, author = {Giuseppe Chiti}, title = {A {W} 2, 2 {Bound} for a {Class} of {Elliptic} {Equations} in {Nondivergence} {Form} with {Rough} {Coefficients.}}, journal = {Inventiones mathematicae}, pages = {55--60}, publisher = {mathdoc}, volume = {33}, year = {1976}, zbl = {0327.35023}, url = {http://geodesic.mathdoc.fr/item/IM_1976__33_142376/} }
Giuseppe Chiti. A W 2, 2 Bound for a Class of Elliptic Equations in Nondivergence Form with Rough Coefficients.. Inventiones mathematicae, Tome 33 (1976), pp. 55-60. http://geodesic.mathdoc.fr/item/IM_1976__33_142376/