Published High Strength Geopolymers Produced from Coal Combustion Fly Ash by Nugteren H.W., Butselaar-Orthlieb V.C.L., Izquierdo M. 155-161_11-2_593_NUGTEREN_paper.pdf
Published Overview of the Temporal Variation of PM10 Mass Concentrations in the two Major Cities in Greece: Athens and Thessaloniki by Triantafyllou E., Biskos G. 431-441_845_Triantafyllou_14-4.pdf