3 papers were published in 1991.
1. N.Matuura, T.Oguti
Japanese Plans for Spitsbergen Radar.
Annales Geophysicae, 9, 339-339, 1991.
2. N.Matuura, T.Oguti, S.Nozawa
Spitsbergen IS Radar Plan.
Proc. 90th Assembly of the Society of Geomagnetism and Earth, Planetary and Space Sciences, A31-11, 1991. (in Japanese)
3. N.Matuura, S.Nozawa
Spitsbergen Radar Plan.
Proc. 2nd Symposium on Inosphere-Magnetosphere and Over-Sea Observations, 153-161, 1991. (in Japanese)