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)