Testing for Labour Pooling as a Source of Agglomeration Economies: Evidence for Labour Markets in England and Wales
Patricia Melo, Daniel J. Graham
Papers In Regional Science, vol. 93, 2014, p. 31-52.

The Effect of Labour Market Spatial Structure on Commuting in England and Wales
Patricia Melo, Daniel J. Graham, Robert Noland
Journal Of Economic Geography, vol. 12, 2012, p. 717-737.

The contributions of technical and allocative efficiency to the economic performance of European railways
António Couto, Daniel J. Graham
Portuguese Economic Journal, vol. 7, 2008, p. 125-153.