Low-energy calibration of XENON1T with an internal Ar source E. Aprile, K. Abe, F. Agostini, S. Ahmed Maouloud, M. Alfonsi, L. Althueser, B. Andrieu, E. Angelino, J. R. Angevaare, V. C. Antochi et al. (155 more) Eur. Phys. J. C, 83 6 (2023) 542 Published online: 27 June 2023 DOI: 10.1140/epjc/s10052-023-11512-z