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On economic curves
Pont de Nemours, Pierre Samuel du, (1955)
Multinomial probit : the theory and its application to demand forecasting
Daganzo, Carlos, (1979)
Activity analysis and general equilibrium modelling
Ginsburgh, Victor, (1981)
Graphisch-mathematische Methoden der Wirtschaftswissenschaften
Schmidt, Karl-Ulrich, (1964)