@article{CMUC_2009__50_3_a3,
     author = {Demirel, O\u{g}uzhan},
     title = {The theorems of {Stewart} and {Steiner} in the {Poincar\'e} disc model of hyperbolic geometry},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {359--371},
     publisher = {mathdoc},
     volume = {50},
     number = {3},
     year = {2009},
     mrnumber = {2573410},
     zbl = {1212.51002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2009__50_3_a3/}
}