@article{AMI_2012_40_a14,
     author = {L\'aszl\'o Budai},
     title = {A possible general approach of the {Apollonius} problem with the help of {GeoGebra}},
     journal = {Annales mathematicae et informaticae},
     pages = {163--173},
     year = {2012},
     volume = {40},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMI_2012_40_a14/}
}