On some boundary value problems for an ultrahyperbolic equation.
On a spatial problem of Darboux type for a second-order hyperbolic equation.
On the correct formulation of a multidimensional problem for strictly hyperbolic equations of higher order.
On the solvability of a spatial problem of Darboux type for the wave equation.
On the solvability of a Darboux type non-characteristic spatial problem for the wave equation.
On a Darboux type multidimensional problem for second-order hyperbolic systems.
Goursat and Darboux type problems for linear hyperbolic partial differential equations and systems.
On the solvability of the multidimensional version of the first Darboux problem for a model second-order degenerating hyperbolic equation.
On some multidimensional versions of a characteristic problem for second-order degenerating hyperbolic equations.
On the existence or the absence of global solutions of the Cauchy characteristic problem for some nonlinear hyperbolic equations.
On some boundary value problems for a class of hyperbolic systems of second order in conic domains.
On a vibration of an elastic cusped bars.
To the theory of boundary value problems for hyperbolic type equations and systems.
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