MalekHoseini, Abas, Saffari Raad, Ali, Ghasemi, Ahmad, Rajabi Amir Abad, Robabeh. “Analysis the Urban Hierarchy of Gilan  Province between 1986- 2011- Based on: Rank-Size,  logarithmic Models,
the Lorenz Curve and the Gini Coefficient.” , vol. 8, no. 30, 2015, pp. 111-135.