1. Beckstead D, Brown W, and Gellatly G (2008) Cities and growth: the left brain of North American Cities: Scientists and engineers and urban growth, 11-622-MIE, no. 17. Ottawa: Statistics Canada.
2. Brender N and Lefebvre M (2006)Canada’s Hub Cities: A Driving Force of the National Economy. Ottawa: The Conference Board of Canada.
3. Brender N, Cappe M and Golden A (2007)Mission Possible: Successful Canadian Cities. The Canada Project Final Report, Volume III. Ottawa: The Conference Board of Canada.
4. Brezis E and Krugman P (1997) Technology and the life cycle of cities,Journal of Economic Growth2: 360–383.
5. Carlino G, Chatterjee S and Hunt R (2007) Urban density and the rate of invention,Journal of Urban Economics61: 389–419.