1.
Sitepu VB, Soma AM. Comparison of black scholes and garch models using collar strategy as a hedging efforts in the telecommunication industry (Telkomsel, XL, Indosat). Journal of Multidisciplinary Academic and Practice Studies [Internet]. 2025 Jul. 21 [cited 2025 Aug. 1];3(3):651-75. Available from: https://goodwoodpub.com/index.php/JoMAPS/article/view/3209