Kobylinski, Z.; Trebicka, R.; Izdebska, I.
(Кинематика и физика небесных тел, 2005)
We examine long-term series of IHV and C9 geomagnetic indices calculated from the data derived during the 20th century in St.-Petersburg, Pavlovsk, Swider, Cheltenham, Fredericksburg, Kakioka, and Honolulu in order to ...