TY - SER AU - Mullens,S. AU - Yperman,J. AU - Yperman,J. TI - Sulfur analysis of bolu-mengen lignite before and after microbiological treatment using reductive pyrolysis and gas chromatography/mass spectrometry KW - Azufre KW - Pirólisis KW - Cromatografía KW - Espectrometría ER -