The nonlocal boundary value problem , , , , , , for hyperbolic Schrödinger equations in a Hilbert space with the self-adjoint positive definite operator is considered. The stability estimates for the solution of this problem are established. In applications, the stability estimates for solutions of the mixed-type boundary value problems for hyperbolic Schrödinger equations are obtained.
"A Note on Nonlocal Boundary Value Problems for Hyperbolic Schrödinger Equations." Abstr. Appl. Anal. 2012 (SI18) 1 - 12, 2012. https://doi.org/10.1155/2012/687321