Kynoch, D., Ward, M. J., Lawrence, A., Bruce, A. G., Landt, H., & MacLeod, C. L. (2019). The ‘Big Dipper’: the nature of the extreme variability of the AGN SDSS J2232−0806. Monthly Notices of the Royal Astronomical Society, 485(2), 2573-2588. https://doi.org/10.1093/mnras/stz517