giresse 发表于 2014-12-15 21:27 
也谢谢你的帮助,请看看这个文献能否找到:
Dieu-Hang, T., Kompas, T., September 2010.
A modification of the estar model and testing for a unit root in a nonlinear framework,
discussion Paper, Crowford school of Economics and Government, Australian National University.