Geodesic
Tricomi problem for a mixed type equation with two lines of type changing in a special area
Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences, no. 1 (2013), pp. 46-52.

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We obtain conditions on the complex parameter, when there is an unique solution of the Tricomi problem for an equation with two perpendicular lines of degeneracy.
Keywords: Tricomi problem, mixed type equation, uniqueness of solution. 
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A. A. Gimaltdinova. Tricomi problem for a mixed type equation with two lines of type changing  in a special area. Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences, no. 1 (2013), pp. 46-52. http://geodesic.mathdoc.fr/item/VSGTU_2013_1_a5/

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