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.
Characterization of packaging grade papers from recycled raw materials through the study of fibre morphology and composition
by
Adamopoulos S., Martinez E. and Ramirez D.