'Back Matter' (Materials, Circuits and Devices, 2019), 'Radio Frequency and Microwave Power Amplifiers. Volume 1: Principles, Device Modeling and Matching Networks', Chap. bm, pp. -, DOI: 10.1049/PBCS071F_bm
IET Digital Library, https://digital-library.theiet.org/;jsessionid=3hml813mrgr40.x-iet-live-01content/books/10.1049/pbcs071f_bm