Nicholson, Charles F.Bishop, Phillip M.Nagurney, Anna2018-08-212018-08-211994-12-01https://hdl.handle.net/1813/58231WP 1994-14 December 1994en-USUsing Variational Equalities to Solve Spatial Price Equilibrium Models with Ad Valorem Tariffs and Activity Analysisarticle