The cosmic ray asymptotic directions for station Oulu in the magnetic field of the Tsyganenko 1989 model
Danilova, Olga; Tyasto, Marta; Kananen, Hannu; Tanskanen, Pekka (1999)
Helsinki : Geofysiikan seura
1999
Geophysica 35 (1999) : 1-2, 9. artikkeli