Narto, A., A. Prasetiawan, and M. Syaefudin. “Analysis of the Occurrence of Combustion Failure in the Steam Boiler at KM. Nggapulu”. RSF Conference Series: Engineering and Technology, vol. 3, no. 1, Oct. 2023, pp. 126-33, doi:10.31098/cset.v3i1.731.