@article{1104250953, author = {Gibbons, G. W. and Hawking, S. W.}, title = {Selection rules for topology change}, journal = {Comm. Math. Phys.}, volume = {143}, number = {2}, year = {1992}, pages = { 345-352}, language = {en}, url = {http://dml.mathdoc.fr/item/1104250953} }
Gibbons, G. W.; Hawking, S. W. Selection rules for topology change. Comm. Math. Phys., Tome 143 (1992) no. 2, pp. 345-352. http://gdmltest.u-ga.fr/item/1104250953/