@article{Lin2017a, author = "D. Lin and B. Zhang and W. A. Scales and M. Wiltberger and C. R. Clauer and Z. Xu", title = "The role of solar wind density in cross polar cap potential saturation under northward interplanetary magnetic field", year = 2017 , journal = "Geophysical Research Letters", publisher = "American Geophysical Union", volume = 44, pages = "11729-11734", keywords = "risrn", doi = "10.1002/2017GL075275" }