@article{Koustov2018a, author = "A. V. Koustov and P. V. Ponomarenko and C. J. Graf and R. G. Gillies and D. R. Themens", title = "Optimal F region electron density for the PolarDARN radar echo detection near the Resolute Bay zenith", year = 2018 , journal = "Journal of Geophysical Research: Radio Science", publisher = "American Geophysical Union", volume = 53, keywords = "risrn", doi = "10.1029/2018RS006566" }