Charmed states and flavour symmetry breakingR. Horsley, Z. Koumi, Y. Nakamura, H. Perlt, P. E. L. Rakow, G. Schierholz, A. Schiller, H. Stüben, R. D. Young and J. M. ZanottiEPJ Web Conf., 175 (2018) 06017DOI: https://doi.org/10.1051/epjconf/201817506017