Volume 46, Issue 1, September 2014, Pages 23-38
10.22060/ceej.2014.328
Mohammadreza Esfahani; seyed mohammad saberizadeh
Volume 42, Issue 2, February 2010, Pages 49-57
10.22060/ceej.2010.177
Mahmod Nili; Amirmasoud Salehi
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