1. Fei L., Hongjun G. (2011). Global nonexistence of positive initial energy solutions for coupled nonlinear wave equations with damping and source terms, Abst. Appl. Anal., 1-14.
2. Hao J., Cai L. (2016). Global existence and blow up of solutions for nonlinear coupled wave equations with viscoelastic terms, Math. Meth. Appl. Sci., (39): 1977-1989.
3. Hao J., Niu S., Men, H. (2014). Global nonexistence of solutions for nonlinear coupled viscoelastic wave equations with damping and source terms, Boundary Value Problems, 250: 1-11.
4. Han X., Wang M. (2009). Global existence and blow-up solutions for a system of nonlinear viscoelastic wave equations with damping and source, Nonlinear Anal., (71): 5427-5450.
5. Liu W. (2009). Uniform decay of solutions for a quasilinear system of viscoelastic equations, Nonlinear Anal., (71): 2257-2267.