Working Papers

Technological Spillover Effects of State Renewable Energy Policy: Evidence From Patent Counts,” NBER Working Paper #25390, December 2018 (with Wangcong Fu, Chong Li, and Jan Ondrich).


China and India as Suppliers of Affordable Medicines to Developing Countries,” NBER Working Paper #17249, July 2011 (with Tamara Hafner).


Knowledge Spillovers in Interdependent Economies” (with Yonghong Wu and Stuart Bretschneider), May 2001.
Note: because of size constraints, Table 4 is not included.


Description of data used in my energy patent papers (taken from chapter 2 of my dissertation).

Last modified June 24, 2020