@article{BUMI_2000_8_3B_2_a5,
     author = {Dragotti, S. and Magro, G. and Parlato, L.},
     title = {On the groups $\Theta^{\mathcal{F}}_n$ of a sphere},
     journal = {Bollettino della Unione matematica italiana},
     pages = {337--346},
     publisher = {mathdoc},
     volume = {Ser. 8, 3B},
     number = {2},
     year = {2000},
     zbl = {0962.55007},
     mrnumber = {558680},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2000_8_3B_2_a5/}
}