Burr, James B.; Zongjian Chen, ; Baas, Bevan M.: 'Stanford's ultra-low-power CMOS technology and applications' (Materials, Circuits and Devices, 1996), 'Low-power HF Microelectronics: a unified approach', Chap. 3, pp. 85-138, DOI: 10.1049/PBCS008E_ch3 IET Digital Library, https://digital-library.theiet.org/;jsessionid=23x802ek6xapn.x-iet-live-01content/books/10.1049/pbcs008e_ch3