Evidence of a non-conservative mass transfer in the ultra-compact X-ray source XB 1916-053R. Iaria, A. Sanna, T. Di Salvo, A. F. Gambino, S. M. Mazzola, A. Riggio, A. Marino and L. BurderiA&A, 646 (2021) A120DOI: https://doi.org/10.1051/0004-6361/202039225