Phase-resolved hard X-ray emission of the high-mass binary LS 5039: a spectral hardening above 50 keV detected with INTEGRALM. Falanga, A. M. Bykov, Z. Li, A. M. Krassilchtchikov, A. E. Petrov and E. BozzoA&A, 654 (2021) A127DOI: https://doi.org/10.1051/0004-6361/202141102
