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@article{MZ_1970__116_171383, author = {Duncan H. Martin}, title = {Total {Convexity} for {Parametric} {Multiple} {Integrals} in the {Calculus} of {Variations.}}, journal = {Mathematische Zeitschrift}, pages = {205--214}, publisher = {mathdoc}, volume = {116}, year = {1970}, zbl = {0194.42502}, url = {http://geodesic.mathdoc.fr/item/MZ_1970__116_171383/} }
Duncan H. Martin. Total Convexity for Parametric Multiple Integrals in the Calculus of Variations.. Mathematische Zeitschrift, Tome 116 (1970), pp. 205-214. http://geodesic.mathdoc.fr/item/MZ_1970__116_171383/