Composition of reed mineral matter and its behavior at combustionKask, Ülo; Paist, Aadu; Kask, LiviaThe 15th European Biomass Conference & Exhibition : Berlin (Germany), 7-11.05.20072007 / ? p Composition of reed mineral matter and its behavior at combustionPaist, Aadu; Kask, Ülo; Kask, Livia15th European Biomass Conference & Exhibition : from Research to Market Development : proceedings of International Conference held in Berlin, Germany 7-11 May 20072007 / p. 1666-1669