Debbichi S, Hichri W. Modeling of Critical Threshold of Preference for Collusion (C.T.P.C.) and Cost Structure in Tunisian Mobile Market. Quant. Econ. Manag. Stud. [Internet]. 2024 Jan. 17 [cited 2026 May 24];5(1):121-34. Available from: https://qemsjournal.org/index.php/qems/article/view/2259