Helseth, Arild; Fodstad, Marte; Askeland, Magnus; Mo, Birger; Nilsen, Odd Bjarte; Pérez-Díaz, Juan Ignacio; Chazarra, Manuel; Guisández, Ignacio: 'Assessing hydropower operational profitability considering energy and reserve markets', IET Renewable Power Generation, 2017, 11, (13), p. 1640-1647, DOI: 10.1049/iet-rpg.2017.0407
IET Digital Library, https://digital-library.theiet.org/;jsessionid=xp16xo3cdeyl.x-iet-live-01content/journals/10.1049/iet-rpg.2017.0407