Borrayo López, Rafael, et al. “Productivity and Technical Efficiency of the Regional Manufacturing Industry of Mexico, 1960-2013: A Panel Approach of Stochastic Frontier”. Estudios Económicos De El Colegio De México, vol. 34, no. 1, Jan. 2019, pp. 25-60, doi:10.24201/ee.v34i1.363.