Kavehkar, S. , Ghorbani, M. , Khokhlov, V. , Ashrafzadeh, A. , Darbandi, S.. "Exploiting Two Intelligent Models to Predict Water Level: A Field Study of Urmia Lake, Iran". World Academy of Science, Engineering and Technology, Open Science Index 51, International Journal of Environmental and Ecological Engineering (2011), 5(3), 162 - 166.