@article{MAN_1925__94_159101,
     author = {H.W. Brinkmann},
     title = {Einstein spaces which are mapped conformally on each other},
     journal = {Mathematische Annalen},
     pages = {119--145},
     publisher = {mathdoc},
     volume = {94},
     year = {1925},
     zbl = {51.0568.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1925__94_159101/}
}