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Trade flows and spatial effects : the gravity model revisited
Carrington, Anca, (2000)
Carrington, Anca, (2001)
The mistreated model : some technical comments on Porojan's paper on: "Trade flows and spatial effects"
Johnston, Ron, (2003)
Proper econometric specification of the gravity model
Mátyás, László, (1997)
Introduction to the generalized method of moments estimation
Harris, David, (1999)
Modelling export activity of eleven APEC countries
Mátyás, László, (2000)