BHAGIRATHARAO, E. On noise figures in transistor audio amplifiers. Defence Science Journal, [S. l.], v. 12, n. 3, p. 1–10, 2014. DOI: 10.14429/dsj.12.6986. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/6986. Acesso em: 16 jun. 2025.