- George Alekseev, “Travelling waves in expanding spatially homogeneous space–times”, Class. Quantum Grav., 32, № 7, 2015, 075009
- J B Griffiths, M Santano-Roco, “The characteristic initial value problem for colliding plane waves: the linear case”, Class. Quantum Grav., 19, № 16, 2002, 4273
- Jirí Podolský, “Interpretation of the Siklos solutions as exact gravitational waves in the anti-de Sitter universe”, Class. Quantum Grav., 15, № 3, 1998, 719
- Ruth Lazkoz, “G1spacetimes with gravitational and scalar waves”, Phys. Rev. D, 60, № 10, 1999, 104008
- Sucheta Datta, Sarbari Guha, “Propagation of axial and polar gravitational waves in Kantowski–Sachs universe”, Physics of the Dark Universe, 34, 2021, 100890
- Jafar Khodagholizadeh, Amir H. Abbassi, Ali Vahedi, Komeil Babaei, “Gravitational waves in a closed spacetime via deviation equation”, Results in Physics, 26, 2021, 104347
- G A Alekseev, J B Griffiths, “Gravitational waves with distinct wavefronts”, Class. Quantum Grav., 14, № 10, 1997, 2869
- Sucheta Datta, Sarbari Guha, Samarjit Chakraborty, “On the Propagation of Gravitational Waves in Matter-Filled Bianchi I Universe”, Int J Theor Phys, 62, № 10, 2023, 216
- G A Alekseev, J B Griffiths, “Exact solutions for gravitational waves with cylindrical, spherical and toroidal wavefronts”, Class. Quantum Grav., 13, № 8, 1996, 2191
- J. Podolský, “Exact Non-Singular Waves in the Anti-de Sitter Universe”, General Relativity and Gravitation, 33, № 6, 2001, 1093