@article{AA_1997_9_3_a2,
     author = {D. Aharonov and K. Stephenson},
     title = {Geometric sequences of discs in the},
     journal = {Algebra i analiz},
     pages = {104--140},
     year = {1997},
     volume = {9},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AA_1997_9_3_a2/}
}