Galaxy Zoo: unwinding the winding problem – observations of spiral bulge prominence and arm pitch angles suggest local spiral galaxies are winding (Monthly Notices of the Royal Astronomical Society, 2019)

(untitled) - Masters, KL; Lintott, CJ; Hart, RE; Kruk, SJ; Smethurst, RJ; Casteels, K; Keel, WC; Simmons, BD; Stanescu, DO; Tate, J; Tomi, S