1. Alexander, S., Cai, Y.-F., Marciano, A.: Phys. Lett. B 745, 97 (2015)
2. Armendáriz-Picón, C., Greene, P.B.: Gen. Relativ. Gravit. 35, 1637 (2003)
3. Berestetski, V.B., Lifshitz, E.M., Pitaevski, L.P.: Quantum Electrodynamics. Nauka, Moscow (1989)
4. Brans, C., Dicke, R.H.: Phys. Rev. 124, 925 (1961)
5. Carloni, S., Cianci, R., Feola, P., Piedipalumbo, E., Vignolo, S.: Preprint 1811.10300 [astro-phys] (2018)