1. Beilin, S.A. Existence of solutions for one-dimensional wave equations with nonlocal conditions. Elect. J. Diff. Eqs., 2001(76): 1–8 (2001)
2. Beilin, S.A. On a mixed nonlocal problem for a wave equation. Elect. J. Diff. Eqs., 2006(103): 1–10 (2006)
3. Benouar, N.E., Yurchuk, N.I. A mixed problem with an integral conditions for parabolic equations with a Bessel operator. Differential Equations, 27(12): 1482–1487 (1991)
4. Berrimi, S., Messaoudi, S.A. Exponential decay of solutions to a viscoelastic equation with nonlinear localized damping. Elect. J. Diff. Eqs., 2004(88): 1–10 (2004)
5. Berrimi, S., Messaoudi, S.A. Existence and decay of solutions of a viscoelastic equation with a nonlinear source. Nonlinear Analysis, 64: 2314–2331 (2006)