Asymmetric persistence in GDP? A deeper look at depth
Gregory D. Hess and Shigeru Iwata
Journal of Monetary Economics
Volume 40, Issue 3, December 1997, Pages 535-554

Asymmetric business cycle turning points Grant McQueen and Steven ThorleyJournal of Monetary Economics
Volume 31, Issue 3, June 1993, Pages 341-362

Asymmetric business cycles: Theory and time-series evidence
Daron Acemoglu and Andrew Scott
Journal of Monetary Economics
Volume 40, Issue 3, December 1997, Pages 501-533


Asymmetries in the Cyclical Behaviour of UK Labour Markets, by Daron Acemoglu and Andrew Scott © 1994 Royal Economic Society.
http://www.jstor.org/pss/2235450
Dynamic Asymmetries in U.S. Unemployment, by Gary Koop and Simon M. Potter © 1999 American Statistical Association
http://www.jstor.org/pss/1392288

Do recessions permanently change output?
Paul Beaudry  Gary KoopJournal of Monetary Economics
Volume 31, Issue 2, April 1993, Pages 149-163


Effects of the Hodrick-Prescott filter on trend and difference stationary time series Implications for business cycle research
Timothy Cogley and James M. Nason
Journal of Economic Dynamics and Control
Volume 19, Issues 1-2, January-February 1995, Pages 253-278

Business Cycle Asymmetries: International Evidence
W. A. Razzak
Review of Economic Dynamics
Volume 4, Issue 1, January 2001, Pages 230-243

Time Irreversibility and Business Cycle AsymmetryJournal article by James B. Ramsey, Philip Rothman; Journal of Money, Credit & Banking, Vol. 28, 1996