Published
              
  
  Slag and ash chemistry after high-calcium lignite combustion in a pulverized coal-fired power plant
by 
      Papastergios G., Fernandez –Turiel J.L., Georgakopoulos A. and Gimeno D.
by Stamou A.I., Noutsopoulos C., Pipilis K.G., Gavalaki E., Andreadakis A.