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Author: Barbu, Viorel

• Barbu, Viorel: Necessary conditions for the multiple integral problem and elliptic variational inequalities. (English). In: Greguš, Michal (ed.): Equadiff 5. Proceedings of the Fifth Czechoslovak Conference on Differential Equations and Their Applications held in Bratislava, August 24-28, 1981. BSB B.G. Teubner Verlagsgesellschaft, Leipzig, 1982. pp. 30-33