1. “On persistence of shocks to economic variables: A common misconception” by
Marco Lippi, Lucrezia Reichlin, Journal of Monetary Economics Volume 29, Issue 1, February 1992, Pages 87-93
2. "Structural change and unit root econometrics" by
Lucrezia Reichlin, Economics Letters Volume 31, Issue 3, December 1989, Pages 231-233