1  Knowledge Spillovers and Total Factor Productivity: Evidence Using a Spatial Panel Data Model

Manfred M. Fischer, Thomas Scherngell, Martin Reismann

Geographical Analysis

Volume 41, Issue 2, pages 204–220, April 2009

http://onlinelibrary.wiley.com/doi/10.1111/j.1538-4632.2009.00752.x/full

2  Spatial externalities and empirical analysis: the case of Italy

Giordano Mion

Journal of Urban Economics
Volume 56, Issue 1, July 2004, Pages 97-118

http://www.sciencedirect.com/science/article/pii/S0094119004000348