Achromatic late-time variability in thermonuclear X-ray bursts - An accretion disk disrupted by a nova-like shell?J. J. M. in ’t Zand, D. K. Galloway and D. R. BallantyneA&A, 525 (2011) A111DOI: https://doi.org/10.1051/0004-6361/201015556