The curved X-ray spectrum of PSR B1509-58 observed with BeppoSAXG. Cusumano, T. Mineo, E. Massaro, L. Nicastro, E. Trussoni, S. Massaglia, W. Hermsen and L. KuiperA&A, 375 2 (2001) 397-404DOI: https://doi.org/10.1051/0004-6361:20010884