Spectroscopy of the helium-rich binary ES Ceti reveals accretion via a disc and evidence of eclipsesK. Bąkowska, T. R. Marsh, D. Steeghs, G. Nelemans and P. J. GrootA&A, 645 (2021) A114DOI: https://doi.org/10.1051/0004-6361/202039266