Small-scale density variations in the lunar crust revealed by GRAIL. - Jansen JC; Andrews-Hanna JC; Li Y; Lucey PG; Taylor GJ; Goossens S; Lemoine FG; Mazarico E; Head JW 3rd; Milbury C; Kiefer WS; Soderblom JM; et al. (Icarus, 2016)