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@article{MS2_1982__50_166782, author = {Seppo Granlund}, title = {An {L...-Estimate} for the gradient of extremals.}, journal = {Mathematica Scandinavica}, pages = {66--72}, publisher = {mathdoc}, volume = {50}, year = {1982}, zbl = {0489.49009}, url = {http://geodesic.mathdoc.fr/item/MS2_1982__50_166782/} }
Seppo Granlund. An L...-Estimate for the gradient of extremals.. Mathematica Scandinavica, Tome 50 (1982), pp. 66-72. http://geodesic.mathdoc.fr/item/MS2_1982__50_166782/