Koichiro Oyama

Tethered rocket experiment (Charge 2): Initial results on electrodynamics

Nobuki Kawashima, Susumu Sasaki, N. B. Myers, 1988 .

Ionospheric response to 2009 sudden stratospheric warming in the Northern Hemisphere

H. Liu, K. Oyama, Huixin Liu, 2014 .

Results from a tethered rocket experiment (Charge-2)

Nobuki Kawashima, W. J. Raitt, S. Sasaki, 1988 .

Multisatellite observations of an intensified equatorial ionization anomaly in relation to the northern Sumatra earthquake of March 2005

Jang-Soo Chae, Kwangsun Ryu, Michel Parrot, 2014 .