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Exact Nonparametric Tests of Orthogonality and Random Walk in the Presence of a Drift Parameter.
Campbell, Bryan, (1997)
Exact Nonparametric Orthogonality and Random Walk Tests.
Campbell, Bryan, (1995)
Over-rejections in rational expectations models : A non-parametric approach to the Mankiw-Shapiro problem
Campbell, Bryan, (1991)