Siti Kurnia Rahayu, Sari AW. Sunk Cost Analysis of Frequency Spectrum Auction Prices in Indonesia Using Data Envelopment Analysis. JEECAR [Internet]. 2022 Feb. 4 [cited 2024 Jul. 3];9(1):49-61. Available from: https://ieeca.org/journal/index.php/JEECAR/article/view/879