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3. Kramer D. Stephani H. MacCallum M. A. H. and Herlt E. Exact solutions of Einstein's field equations Deutscher Verlag der Wissenschaften Berlin and Cambridge University Press Cambridge (1980). (Russian translation: "Tochnie resheniya uravnenii Einshteina" 418 pp. translated by I. V. Mitskievich V. D. Zakharov and S. V. Rumyantsev and edited by Yu. S. Vladimirov Energoisdat Moscow 1982) Kramer D. Stephani H. MacCallum M. A. H. and Herlt E. Exact solutions of Einstein's field equations Deutscher Verlag der Wissenschaften Berlin and Cambridge University Press Cambridge (1980). (Russian translation: "Tochnie resheniya uravnenii Einshteina" 418 pp. translated by I. V. Mitskievich V. D. Zakharov and S. V. Rumyantsev and edited by Yu. S. Vladimirov Energoisdat Moscow 1982)
4. MacCallum M. A. H. "Algebraic computing in relativity " pp. 411--445 in Dynamical spacetimes and numerical relativity ed. J. M. Centrella Cambridge University Press Cambridge (1986). MacCallum M. A. H. "Algebraic computing in relativity " pp. 411--445 in Dynamical spacetimes and numerical relativity ed. J. M. Centrella Cambridge University Press Cambridge (1986).
5. Algebraic computing and the Newman-Penrose formalism in general relativity