'Resource' (Energy Engineering, 2017), 'Wave and Tidal Generation Devices: Reliability and availability', Chap. 2, pp. 33-50, DOI: 10.1049/PBRN018E_ch2
IET Digital Library, https://digital-library.theiet.org/;jsessionid=2in9s496o9q0x.x-iet-live-01content/books/10.1049/pbrn018e_ch2