“Influence of gelation time on the structural, vibrational and electrical properties of the composite PEG0.2/V2O5”, Superficies y Vacio, vol. 25, no. 4, pp. 203–208, Dec. 2012, Accessed: Apr. 24, 2025. [Online]. Available: https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/188