@article{PA_2010_17_a5,
     author = {I. Naraniecka and J. Szynal and A. Tatarczak},
     title = {The generalized {Koebe} function},
     journal = {Problemy analiza},
     pages = {61--66},
     year = {2010},
     number = {17},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PA_2010_17_a5/}
}