8Grant J. Mixed Use in Theory and Practice: Canadian Ex- perience in Implementing a Planning Principle [ J 1- Jour- nal of the American Planning Association, 2002,68 ( 1 ) : 71 - 84.
9Hirt S. Toward Post-modern Urbanism : Evolution of Plan- ning in Cleveland, Ohio[ J 1. Journal of Planning Educa- tion and Research,2005,25 ( 1 ) :27 - 42.
10Hirt S, David R. The Devil is in the Definitions : Contras- ting American and German Approaches to Zoning [ J l- Journal of the American Planning Association, 2007,73 (4) :436 -453.