ЗЕЛЕНИН, А. Н.; РОТАЧ, О. Л. Principle and signals generator with certain phase shift in the frequency range. Eastern-European Journal of Enterprise Technologies, [S. l.], v. 3, n. 5(45), p. 37–41, 2010. DOI: 10.15587/1729-4061.2010.2830. Disponível em: https://journals.uran.ua/eejet/article/view/2830. Acesso em: 24 dec. 2024.