1. A Lagrange Multiplier‐Type Test for Idiosyncratic Unit Roots in the Exact Factor Model. (23rd March 2016) Authors: Zhou, Xingwu; Solberger, Martin Journal: Journal of time series analysis Issue: Volume 38:Number 1(2017:Jan.) Page Start: 22 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗