SIREGAR, Nurdin; MARLIANTO, Eddy; GEA, Saharman; MOTLAN, . The Effect of Concentration of Structure and Optical Properties of Thin Films Synthesized by Sol-Gel Methods Spin Coating. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 22, n. 1, p. 428–434, 2015. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/3975. Acesso em: 13 sep. 2025.