Stephani, H., Kramer, D., Maccallum, M., Hoenselaers, C., & Herlt, E. (2003). Exact solutions of Einstein's field equations (2nd ed.). Cambridge University Press.

Stephani, Hans, Dietrich Kramer, Malcolm Maccallum, Cornelius Hoenselaers, and Eduard Herlt. Exact Solutions of Einstein's Field Equations. 2nd ed. Cambridge, UK ; New York: Cambridge University Press, 2003.

Stephani, Hans, et al. Exact Solutions of Einstein's Field Equations. 2nd ed. Cambridge University Press, 2003.