Supreya Trivijitkasem, Chirawat Kluenrat, and Viboon Pumchuchit. “Vanadium-Lead Doped Bi-2223 Superconductor”. Agriculture and Natural Resources, vol. 40, no. 5, Oct. 2006, pp. 28-34, https://li01.tci-thaijo.org/index.php/anres/article/view/243875.