Were the Jews Moneylenders Out of Necessity? By Maristella Botticini and Zvi Eckstein. Reform Judaism, Spring 2013. Also here.
Jewish Occupational Selection: Education, Restrictions, or Minorities? By Maristella Botticini and Zvi Eckstein. The Journal of Economic History, Vol. 65, No. 4 (December 2005).
From Farmers to Merchants, Conversions and Diaspora: Human Capital and Jewish History. By Maristella Botticini and Zvi Eckstein. Journal of the European Economic Association, Vol. 5, No. 5 (September 2007).
What makes Jews so smart? By Manuel Trajtenberg. Haaretz, August 2, 2013. Also here.