Source: Enrique Soto and Jorge Carrillo, "Industrial scaling with social scaling: A study of the Automotive Industry in the City of Chihuahua", in Bracamonte Alvaro (coordinator) "Technological Change in the Automotive Industry of Mexico. Exploring the agenda from a regional perspective", El Colegio de Sonora, Coecyt, Hermosillo Sonora, Mexico, 2017, (Ch. 5) pp. 145-180