• Possibilities for reducing the circulation ratio and mass of ashes in the furnaces of circulating fluidized bed boilersSiirde, Andres; Martins, AntsCirculating Fluidized Bed Technology IX : proceedings of the 9th International Conference on Circulating Fluidized Beds in conjunction with 4th International VGB Workshop "Operating Experience with Fluidized Bed Firing Dystems" : May 13-16, 2008, Hamburg, Germany2008 / p. 363-368 : ill