VANDELS survey: a measurement of the average Lyman-continuum escape fraction of star-forming galaxies at z = 3.5. - Begley, R; Cullen, F; McLure, R J; Dunlop, J S; Hall, A; Carnall, A C; Hamadouche, M L; McLeod, D J; Amorín, R; Calabrò, A; Fontana, A; Fynbo, J P U; et al. (Monthly Notices of the Royal Astronomical Society, 2022)