List of Articles تمرکز شهری Open Access Article Abstract Page Full-Text 1 - Technical, Economical and Environmental Feasibility Study of Urban Heating System Replaced with Geothermal Energy in IRAN Younes Noorollahi Hossein Yousefi Ali Hossein Rezayan Hadi Farabi Asl Open Access Article Abstract Page Full-Text 2 - Investigating Spatial Distribution of Population in Urban System of Huge Area, Azerbaijan Mohammad Hasan Yazdani Ata Ghafari Gilande Ahmad Aftab