Long-term X-ray evolution of SDSS J134244.4+053056.1 - A more than 18 year-old, long-lived IMBH-TDE candidateJ. S. He, L. M. Dou, Y. L. Ai, X. W. Shu, N. Jiang, T. G. Wang, F. B. Zhang and R. F. ShenA&A, 652 (2021) A15DOI: https://doi.org/10.1051/0004-6361/202140828
