@article{10_4064_aa_85_2_135_140,
     author = {Kenzi Sat\^o},
     title = {Free groups acting without fixed points on rational spheres},
     journal = {Acta Arithmetica},
     pages = {135--140},
     publisher = {mathdoc},
     volume = {85},
     number = {2},
     year = {1998},
     doi = {10.4064/aa-85-2-135-140},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-85-2-135-140/}
}