TY - JOUR AU - Jahanbeigi, A. AU - Kalantari, M. E. TI - Estimation of the Required Capital Investment in Mobile Telephony Network's Equipments Based on Cobb-Douglas Demand Forecasting Model JO - Nashriyyah -i Muhandisi -i Barq va Muhandisi -i Kampyutar -i Iran VL - 7 IS - 2 SP - 125 EP - 135 PY - 2009 DO - ER -