Identification of Magnetic Flux Ropes from Parker Solar Probe Observations during the First Encounter - Zhao,L-L; Zank,GP; Adhikari,L; Hu,Q; Kasper,JC; Bale,SD; Korreck,KE; Case,AW; Stevens,M; Bonnell,JW; de,Wit TD; Goetz,K; et al. (ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2020)