@article{1103942843,
author = {Dray, Tevian and 't Hooft, Gerard},
title = {The effect of spherical shells of matter on the Schwarzschild black hole},
journal = {Comm. Math. Phys.},
volume = {97},
number = {3},
year = {1985},
pages = { 613-625},
language = {en},
url = {http://dml.mathdoc.fr/item/1103942843}
}
Dray, Tevian; 't Hooft, Gerard. The effect of spherical shells of matter on the Schwarzschild black hole. Comm. Math. Phys., Tome 97 (1985) no. 3, pp. 613-625. http://gdmltest.u-ga.fr/item/1103942843/