"Econometrics as Pioneering in Nonexperimental Model Building", "Econometrica", 37(3), p p. 369-381.</ref>* the role of mathematics and mathematical economics in economics • Paul A. Samuelson, 1952.
"Econometrics as Pioneering in Nonexperimental Model Building, " "Econometrica", 37(3), p p. 369-381.</ref>,* роль математической экономики и математики в экономике • Paul A. Samuelson, 1952.