POP, Flaviu. “Coplexes in Abelian Categories”. Studia Universitatis Babeș-Bolyai Mathematica 62, no. 1 (March 1, 2017): 3–13. Accessed April 20, 2025. https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1684.