Machado, Gerson A. S.: 'Low-power HF microelectronics: a unified approach' (Materials, Circuits and Devices, 1996), 'Low-power HF Microelectronics: a unified approach', Chap. 1, pp. 1-56, DOI: 10.1049/PBCS008E_ch1
IET Digital Library, https://digital-library.theiet.org/;jsessionid=4pghko42bhnnf.x-iet-live-01content/books/10.1049/pbcs008e_ch1