The inner flow geometry in MAXI J1820+070 during hard and hard-intermediate statesB. De Marco, A. A. Zdziarski, G. Ponti, G. Migliori, T. M. Belloni, A. Segovia Otero, M. A. Dziełak and E. V. LaiA&A, 654 (2021) A14DOI: https://doi.org/10.1051/0004-6361/202140567