Sihombing, Tikkos, and Awaludin Martin. 2023. “Analysis of Combustion Characteristics in Boilers Using Comparison of Coal Fuel Mixtures and Bark Biomass To Determine Optimal Combustion Conditions in a Steam Power Plant”. INVOTEK: Jurnal Inovasi Vokasional Dan Teknologi 23 (1), 43-52. https://doi.org/https://doi.org/10.24036/invotek.v23i1.1107.