1. Alammari, M., Snelson, S.: On asymptotic stability for near-constant solutions of variable–coefficient scalar field equations. arXiv:2104.13909
2. Alammari, M., Snelson, S.: Linear and orbital stability analysis for solitary-wave solutions of variable-coefficient scalar field equations. J. Hyperbolic Differ. Equ. 19, 175–201 (2022)
3. Bambusi, D., Cuccagna, S.: On dispersion of small energy solutions to the nonlinear Klein Gordon equation with a potential. Am. J. Math. 133(5), 1421–1468 (2011)
4. Buslaev, V., Perelman, G.: On the stability of solitary waves for nonlinear Schrödinger equations. In: Uraltseva, N.N. (ed.) Nonlinear Evolution Equations. Translations: Series 2, vol. 164, pp. 75–98. American Mathematical Society, Providence (1995)
5. Cazenave, T., Hareaux, A.: An Introduction to Semilinear Equations. Claredon Press, Oxford (1998)