Notes, Comments and Preliminary results Dec 16 2009 Leonard F. S. Wang , Ya-chin Wang and Lihong Zhao   Privatization and the Environment in a Mixed Duopoly with Pollution Abatement   Abstract  Contact Information  Citation  Full Text  -  Note   Mar 25 2009 Yenhuang Chen and Lihong Zhao   Wage Subsidy and Sector-Specific Unemployment: A New Economic Geography Approach   Abstract  Contact Information  Citation  Full Text  -  Note