“…While a few studies use a whole country as testing area and allocate CS all over the country (Chung & Kwon, 2015), another part looks at research areas on the county level (Namdeo et al, 2014;Wirges, 2016;. But in most of the cases, cities, districts of cities or cities and the metropolitan areas are used as case study areas (Andrenacci et al, 2016;Frade et al, 2011;Kameda & Mukai, 2011;Sadeghi-Barzani et al, 2014;Wagner et al, 2014;Wood et al, 2015;Zhao, Zhang, Wei, & Zhang, 2015). Only a few studies apply the models in a small area below an administration level as they observe only a section of a district or city area (B€ ohm, 2013;Ya gCitekin, Uzuno gLu, & Karakaş, 2016).…”