1. 1. M. S. Grieco, and D. Phil , ?Information networks and the allocation of employment opportunity ?, unpublished, thesis , University of Oxford. 1984 .
2. Corby: New Town planning and imbalanced development
3. 3. R. E. Pahl , Structures and processes of urban life . 2nd edition . Longman, London, 1983 , pp.86 -88 .
4. 4. M. S. Grieco , 1985 . op. cit.