Sunarmo S, Pardiansyah E, Asriyah A. Concentration and Competition in the Pharmaceutical Sector in an Era of Challenges. JEP [Internet]. 2023 Jul. 8 [cited 2024 Nov. 14];21(1):39-48. Available from: https://jep.ejournal.unsri.ac.id/index.php/jep/article/view/20779