“…3 Classic references on spatial models are Ord (1973, 1981), Anselin (1988), and Cressie (1993). 4 Some applications along these lines are, e.g., Audretsch and Feldmann (1996), Bell and Bockstael (2000), Bernat (1996), Besley and Case (1995), Bollinger and Ihlanfeldt (1997), Buettner (1999), Case (1991), Case, Hines, and Rosen (1993), Dowd and LeSage (1997), Holtz-Eakin (1994), Kelejian and Robinson (2000, 1997, 1993), Pinkse, Slade, and Brett (2002), Rey and Boarnet (1998), Shroder (1995), and Vigil (1998). 5 Recent theoretical contributions include Li (2004, 2001a,b), Baltagi, Song and Koh (2003), Conley (1999), , 2001, 1997, Kelejian, Prucha, and Yuzefovich (2003), Lee (2004Lee ( , 2003Lee ( , 2002Lee ( , 2001a, LeSage (2000LeSage ( , 1997, Pace and Barry (1997), Pinkse and Slade (1998), Pinkse, Slade, and Brett (2002), and Rey and Boarnet (2004).…”