1. Taub, A. H.: Ann. Math.53, 472–490 (1951).
2. Newman, E., Tamburino, L., Unti, T.: J. Math. Phys.4, 915–923 (1963).
3. Misner, C., Taub, A. H.: Soviet Phys. JETP28, 122–133 (1969).
4. —— Taub-NUT space as a counterexample to almost anything. In: Ehlers, J., Ed.: Lectures in applied mathematics, Vol. 8. Providence, Rhode Island: Amer. Math. Soc. 1967.
5. —— Phys. Rev. Letters22, 1071–1074 (1969).