@article{GDZPPN002270390, title = {Einstein spaces which are mapped conformally on each other}, journal = {Mathematische Annalen}, volume = {93}, year = {1925}, pages = {119-145}, zbl = {51.0568.03}, url = {http://dml.mathdoc.fr/item/GDZPPN002270390} }
Brinkmann, H.W. Einstein spaces which are mapped conformally on each other. Mathematische Annalen, Tome 93 (1925) pp. 119-145. http://gdmltest.u-ga.fr/item/GDZPPN002270390/