%0 Journal Article %A TOKIHIRO, TETSUJI %A MADA, JUN %T FUNDAMENTAL CYCLE OF A PERIODIC BOX-BALL SYSTEM: A NUMBER THEORETICAL ASPECT %J Glasgow mathematical journal %D 2005 %P 199-204 %V 47 %N A %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089505002405/ %R 10.1017/S0017089505002405 %F 10_1017_S0017089505002405