. Author manuscript; available in PMC: 2014 Jul 29.
Published in final edited form as: Discrete Dyn Nat Soc. 2013 Jan 1;2013:720818. doi: 10.1155/2013/720818
Copyright © 2013 Bilal Khan et al.
This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Figure 8.
The firewall effect during the emergent period.