Wang, Fang-Hsing, Ching-Shan Wang, and Han-Wen Liu. “Hydrothermally Grown ZnO Nanoflowers on a Template-Assisted Ordered Seed Array”. Proceedings of Engineering and Technology Innovation 130 (September 1, 2019): 26-31. Accessed September 25, 2021. https://ojs.imeti.org/index.php/PETI/article/view/4071.