Klimstra, Jacob: 'Energy use in the world and the benefits of cogeneration' (Energy Engineering, 2017), 'Cogeneration: Technologies, Optimization and Implementation', Chap. 2, pp. 5-16, DOI: 10.1049/PBPO087E_ch2 IET Digital Library, https://digital-library.theiet.org/;jsessionid=an9ak2nj9djr.x-iet-live-01content/books/10.1049/pbpo087e_ch2