Detection of a 23.6 min periodic modulation in the optical counterpart of 3XMMJ051034.6–670353G. Ramsay, T. R. Marsh, T. Kupfer, V. S. Dhillon, D. Steeghs, P. Woudt and P. GrootA&A, 617 (2018) A88DOI: https://doi.org/10.1051/0004-6361/201833305