Y. Shen, D. J. Knudsen, J. K. Burchill, A. Howarth, A. Yau, R. J. Redmon, D. M. Miles, R. H. Varney, and M. J. Nicolls. Strong ambipolar-driven ion upflow within the cleft ion fountain during low geomagnetic activity. J. Geophys. Res. Space Physics, issue 121,  2016 .

Y. Zou, Y. Nishimura, J. K. Burchill, D. J. Knudsen, L. R. Lyons, K. Shiokawa, S. Buchert, S. Chen, M. J. Nicolls, M. J. Ruohoniemi, K. A. McWilliams, and N. Nishitani. Localized field-aligned currents in the polar cap associated with airglow patches. J. Geophys. Res. Space Physics, American Geophysical Union, issue 121,  2016 .

J. K. Burchill, J. H. Clemmons, D. J. Knudsen, M. Larsen, M. J. Nicolls, R. F. Pfaff, D. Rowland, and L. Sangalli. High-latitude E region ionosphere-thermosphere coupling: A comparative study using in situ and incoherent scatter radar observations. J. Geophys. Res., volume 117,  2012 .