Bruno, Nestor. “Endogenous Sunk Costs and Competition: Application to the Case of Local Telephony in the US”. Ensayos de Política Económica 3, no. 1 (October 23, 2019): 37–57. Accessed July 3, 2024. https://e-revistas.uca.edu.ar/index.php/ENSAYOS/article/view/2282.