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A spatial, general equilibrium analysis of optimal city size
Arnott, Richard, (1976)
Socio-spatial integration and dynamics in the metropolitan areas of Madrid and Copenhagen
Kristensen, Gustav, (1994)
Labor specialization and city formation
Berliant, Marcus C., (1995)
Skill distribution and income disparity in a north-south trade model;
Abdel-Rahman, Hesham M., (2003)
Trade, Urban Systems, and Labor Markets
Abdel-Rahman, Hesham M., (2005)