Brombacher, Aarnout C.: 'Robust design and reliability analysis' (Materials, Circuits and Devices, 1996), 'Low-power HF Microelectronics: a unified approach', Chap. 11, pp. 431-452, DOI: 10.1049/PBCS008E_ch11 IET Digital Library, https://digital-library.theiet.org/;jsessionid=699gkkrptqfhg.x-iet-live-01content/books/10.1049/pbcs008e_ch11