@article{10_4064_fm_50_2_129_158,
     author = {Wanda Szmielew},
     title = {A new analytic approach to hyperbolic geometry},
     journal = {Fundamenta Mathematicae},
     pages = {129--158},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {1961},
     doi = {10.4064/fm-50-2-129-158},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-50-2-129-158/}
}