Geodesic
On the minimization of a non-linear functional
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (1991), pp. 22-27.

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The problem of shear crack is described by the equivalent variational problem with non-linear functional. As the problem cannot be solved analytically, it becomes necessary to construct algorithms for its numericals solvation. In the article the functional’s minimization method is suggested based on the gradient sloping method with the automatic choice of the step. 
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A. R. Brutian. On the minimization of a non-linear functional. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (1991), pp. 22-27. http://geodesic.mathdoc.fr/item/UZERU_1991_2_a3/

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