Equivalence of Price and Quantity Formulations of Spatial Equilibrium: Purified Duality in Quadratic and Concave Programming
T. Takayama, A. D. Woodland, Equivalence of Price and Quantity Formulations of Spatial Equilibrium: Purified Duality in Quadratic and Concave Programming, Econometrica, Vol. 38, No. 6 (Nov., 1970), pp. 889-906