Lack of emission lines in the optical spectra of SAX J1808.4–3658 during reflaring of the 2019 outburstL. Asquini, M. C. Baglio, S. Campana, P. D’Avanzo, A. Miraval Zanon, K. Alabarta, D. M. Russell and D. M. BramichA&A, 692 (2024) A16DOI: https://doi.org/10.1051/0004-6361/202450816
