TY - Front. Phys. A1 - XU Chao, ZOU Yan, GE Li T1 - The first loop for daily bus operation Y1 - 2006-09-05 JF - Frontiers of Physics JO - Front. Phys. SP - 375 EP - 382 VL - 1 IS - 3 UR - https://journal.hep.com.cn/fop N1 - 10.1007/s11467-006-0033-9 ER -