@article{10_1017_S0008439500025777,
     author = {Helfenstein, Heinz G.},
     title = {Riemann {Surfaces,} by {Lars} {V.} {Ahlfors} and {Leo} {Sario.} {Princeton} {Mathematics} {Series} 26, {Princeton} {University} {Press,} 1960, xi + 382 pages.},
     journal = {Canadian mathematical bulletin},
     pages = {195--196},
     year = {1961},
     volume = {4},
     number = {2},
     doi = {10.1017/S0008439500025777},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0008439500025777/}
}