Rodriguez, Maria J. Gravitation and Black Hole Theory, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;
1805.03798.pdf (Preprint), 4MB
Cunha, P. V. P., Herdeiro, C. A. R., & Rodriguez, M. J. (2018). Shadows of Exact Binary Black Holes. Physical Review D, 98: 044053. doi:10.1103/PhysRevD.98.044053.