Stępczyńska, Katarzyna, Kowalczyk, Łukasz, Dykas, Sławomir, AND Elsner, Witold. " Calculation of a 900 MW conceptual 700/720ºC coal-fired power unit with an auxiliary extraction-backpressure turbine" Journal of Power Technologies [Online], Volume 92 Number 4 (20 December 2012)