“The Instituto Preuniversitario Vocacional de Ciencias Exactas (IPVCE) Luis Urquiza Jorge de Las Tunas: two approaches to its historical evolution” (2023) Opuntia Brava, 15(2), pp. 12–21. Available at: https://opuntiabrava.ult.edu.cu/index.php/opuntiabrava/article/view/1771 (Accessed: 29 October 2026).