Lyot-plane phase masks for improved high-contrast imaging with a vortex coronagraphG. J. Ruane, E. Huby, O. Absil, D. Mawet, C. Delacroix, B. Carlomagno and G. A. SwartzlanderA&A, 583 (2015) A81DOI: https://doi.org/10.1051/0004-6361/201526561
