@article{10_1017_S0008439500027417,
     author = {Schwerdtfeger, H.},
     title = {Nichteuklidische {Geometrie,} {Hyperbolische} {Geometrie} der {Zbene} by {R.} {Baldus,} 4th edition, completed by {F.} {Lobell.} {Samrnlung} {Goscher.} {No.} 970-970a. {Walter} de {Gruyter,} {Berlin,} 1964. 158 pages. {Price} {DM} 5. 80.},
     journal = {Canadian mathematical bulletin},
     pages = {117--117},
     year = {1966},
     volume = {9},
     number = {1},
     doi = {10.1017/S0008439500027417},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500027417/}
}