@article{10_1017_S0008439500027508,
     author = {Helfenstein, Heinz G.},
     title = {Funktionentheorie, by {A.} {Hurwitz} and {R.} {Courant,} with an appendix by {H.} {Rohrl.} 4th edition. {Springer} {Verlag,} {Berlin-Gottingen-} {Heidelberg-New} {York,} 1964. xiii + 706 pages. {Price} {DM.} 49.00.},
     journal = {Canadian mathematical bulletin},
     pages = {126--128},
     year = {1966},
     volume = {9},
     number = {1},
     doi = {10.1017/S0008439500027508},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500027508/}
}