Electrostatic Turbulence and Debye-scale Structures in Collisionless Shocks - Wang,R; Vasko,IY; Mozer,FS; Bale,SD; Artemyev,AV; Bonnell,JW; Ergun,R; Giles,B; Lindqvist,P-A; Russell,CT; Strangeway,R (ASTROPHYSICAL JOURNAL LETTERS, 2020)