@article{PSMIR_1975___S4_A14_0,
     author = {Kubo, Izumi},
     title = {The {Motion} of {Disks} in a {Torus}},
     journal = {Publications de l'Institut de recherche math\'ematiques de Rennes},
     eid = {14},
     pages = {1--4},
     publisher = {D\'epartement de Math\'ematiques et Informatique, Universit\'e de Rennes},
     number = {S4},
     year = {1975},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PSMIR_1975___S4_A14_0/}
}