Notes, Comments and Preliminary results Mar 11 2009 Aaron Lowen and Chung-Hua Shen   The random walk hypothesis revisited: evidence from the 16 OECD stock prices   Abstract  Contact Information  Citation  Full Text  -  Note   Apr 21 2008 Shyh-Wei Chen , Mei-Rong Lin and Chung-Hua Shen   Common wave behavior for mergers and acquisitions in OECD countries? a unique analysis using new Markov switching panel model approach   Abstract  Contact Information  Citation  Full Text  -  Note