Frangopoulos, Christos A.: 'Economic analysis of cogeneration systems' (Energy Engineering, 2017), 'Cogeneration: Technologies, Optimization and Implementation', Chap. 10, pp. 191-232, DOI: 10.1049/PBPO087E_ch10
IET Digital Library, https://digital-library.theiet.org/;jsessionid=1x12o4v3gmtin.x-iet-live-01content/books/10.1049/pbpo087e_ch10