“…The optimal zoning analysis under oligopoly competition was investigated using different frameworks, such as the Hotelling model(Lai and Tsai, 2004; Matsumura and Matsushima, 2011;, Cournot competition(Chen and Lai, 2008; Colombo, 2012), circular model (Hamondi and Risueno, 2012), and connected cities(Bárcena-Ruiz and Casado-Izaga, 2017, 2018, 2020.…”