LIAO, Xiangrui. Research and Design of Sine Wave and Square Wave Signal Generator. Science and Technology of Engineering, Chemistry and Environmental Protection, [S. l.], v. 2, n. 6, p. 6182, 2024. DOI: 10.61173/14pbkh85. Disponível em: https://stecep.deanfrancis.press/article/view/1196. Acesso em: 23 oct. 2026.