Yuliang, Shen, Some Remarks on the Geodesics in Infinite Dimensional Teichmüller Space, Acta Mathematica Sinica, New Series Chinese Journal of Mathematics, 13(4), 1997, pp. 497-502
Let B denote the set of those points p in an inifnite dimensional Teichmüller space such that a goedisc between the zero point and p is not unique. Some properties of the set B are given.