Discussion paper DP4138 The Origins of Spatial Interaction Wolfgang Keller Carol Shiue 23 Dec 2003 International Trade and Regional Economics F10 O10 R10
Discussion paper DP3958 Core-Periphery Patterns of Generalized Transport Costs: France, 1978-98 Pierre-Philippe Combes Miren Lafourcade 23 Jul 2003 International Trade and Regional Economics F15 H54