A remarkable recurrent nova in M 31: The optical observationsM. J. Darnley, S. C. Williams, M. F. Bode, M. Henze, J.-U. Ness, A. W. Shafter, K. Hornoch and V. VotrubaA&A, 563 (2014) L9DOI: https://doi.org/10.1051/0004-6361/201423411
