M. R. Negale, M. J. Taylor, M. J. Nicolls, S. L. Vadas, K. Nielsen, and C. J. Heinselman. Seasonal propagation characteristics of MSTIDs observed at high latitudes over Central Alaska using the Poker Flat Incoherent Scatter Radar. Journal of Geophysical Research: Space Physics, American Geophysical Union, volume 123,  2018 .