@article{Ren2020a,
author = "J. Ren and S. Zou and J. Lu and N. Giertych and Y. Chen and R. H. Varney and A. S. Reimer",
title = "Statistical Study of Ion Upflow and Downflow Observed by PFISR",
year = 2020 ,
journal = "Journal of Geophysical Research: Space Physics",
volume = 125,
number = 10,
keywords = "pfisr",
doi = "https://doi.org/10.1029/2020JA028179",
url = "https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JA028179"
}