In Situ Observations of Interplanetary Dust Variability in the Inner Heliosphere - Malaspina,DM; Szalay,JR; Pokorny,P; Page,B; Bale,SD; Bonnell,JW; de,Wit TD; Goetz,K; Goodrich,K; Harvey,PR; MacDowall,RJ; Pulupa,M (ASTROPHYSICAL JOURNAL, 2020)