中国科学院数学与系统科学研究院期刊网
AMS
On Nonuniqueness of Geodesics and Geodesic Disks in the Universal Asymptotic Teichmüller Space
Yi QI, Yan WU
Acta Mathematica Sinica . 2017, (2): 201 -209 .  DOI: 10.1007/s10114-016-5399-1