BeppoSAX Low-Energy Concentrator Spectrometer background subtraction techniquesA. N. Parmar, T. Oosterbroek, A. Orr, M. Guainazzi, N. Shane, M. J. Freyberg, D. Ricci and A. MaliziaAstron. Astrophys. Suppl. Ser., 136 2 (1999) 407-418DOI: https://doi.org/10.1051/aas:1999431