unknown. (2020). Optimal systems and invariant solutions of the wave equation on spherically symmetric spacetimes admitting the isometry groups $G_7$.
Chicago Style (17th ed.) Citationunknown. Optimal Systems and Invariant Solutions of the Wave Equation on Spherically Symmetric Spacetimes Admitting the Isometry Groups $G_7$. 2020.
MLA (9th ed.) Citationunknown. Optimal Systems and Invariant Solutions of the Wave Equation on Spherically Symmetric Spacetimes Admitting the Isometry Groups $G_7$. 2020.
Warning: These citations may not always be 100% accurate.