Munee, P., P. Keawboonsong, and P. Laowhasongkram. “The impact of Repeater on the Erlang Capacity of a CDMA Cellular System”. Engineering and Applied Science Research, vol. 32, no. 5, Feb. 2013, pp. 651-62, https://ph01.tci-thaijo.org/index.php/easr/article/view/6220.