Obara, Shin'ya: 'Storage systems for microgrids' (Energy Engineering, 2017), 'Clean Energy Microgrids', Chap. 4, pp. 135-180, DOI: 10.1049/PBPO090E_ch4
IET Digital Library, https://digital-library.theiet.org/;jsessionid=4iq5qdjs0bb9f.x-iet-live-01content/books/10.1049/pbpo090e_ch4