1. Productivity and the density of human capital*;Abel;J. Reg. Sci.,2012
2. How large are human-capital externalities? Evidence from compulsory schooling laws;Acemoglu;NBER Macroecon. Annu.,2000
3. Mostly harmless econometrics—An Empiricist’s companion.;Angrist,2009
4. Elements of skill: traits, intelligences, education, and agglomeration*;Bacolod;J. Reg. Sci.,2010
5. Urban interactions: soft skills versus specialization;Bacolod;J. Econ. Geogr.,2009