Raffo L, Gómez-Calderón D, Ramírez-Andrade C. Monopolistic Competition and Externalities in The Drug Crypto Market. soc.eco [Internet]. 2021 Sep. 15 [cited 2024 Apr. 17];(44):e10610962. Available from: https://sociedadyeconomia.univalle.edu.co/index.php/sociedad_y_economia/article/view/10962