@article{AFM_2009_34_2_a8,
     author = {Jussi V\"ais\"al\"a},
     title = {Quasihyperbolic geometry of planar domains},
     journal = {Annales Fennici Mathematici},
     pages = {447--473},
     publisher = {mathdoc},
     volume = {34},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2009_34_2_a8/}
}