@article{MAN_1870__2_156464,
     author = {Schr\"oter},
     title = {Ueber perspectivisch liegende {Dreiecke}},
     journal = {Mathematische Annalen},
     pages = {553--562},
     year = {1870},
     volume = {2},
     url = {http://geodesic.mathdoc.fr/item/MAN_1870__2_156464/}
}