@article{1103841572, author = {Bonnor, W. B.}, title = {The gravitational field of light}, journal = {Comm. Math. Phys.}, volume = {12}, number = {1}, year = {1969}, pages = { 163-174}, language = {en}, url = {http://dml.mathdoc.fr/item/1103841572} }
Bonnor, W. B. The gravitational field of light. Comm. Math. Phys., Tome 12 (1969) no. 1, pp. 163-174. http://gdmltest.u-ga.fr/item/1103841572/