1. K.S. Thorne, in Magic Without Magic: John Archibald Wheeler, ed. by J. Klauder (Freeman, San Francisco, 1972)
2. C.W. Misner, K.S. Thorne, J.A. Wheeler, Gravitation (Freeman, San Francisco, 1973)
3. We shall use natural units in which
$$G=c=\hbar =1$$
G
=
c
=
ħ
=
1
4. I.H. Redmount, Phys. Rev. D 27, 699 (1983)
5. A.M. Abrahams, K.R. Heiderich, S.L. Shapiro, S.A. Teukolsky, Phys. Rev. D 46, 2452 (1992)