7Ptitsyna N G,Kasinsky V V,Villoresi G,el al.Geomagnetic effects on mid-latitude railways:A statistical study of anomalies in the operation of signaling and train control equipment on the EastSiberian Railway[J].Advances in Space Research,2008,42(9),1510-1514.
8Viljanen A,Pulkkinen A,Pirjola R,el al.Recordings of geomagnetically induced currents and a now casting service of the finnish natural gas pipeline system[J].Space Weather the International Journal of Research&Application,2006,4(10):239-251.
9Wik M,Pirjola R,Lundstedt H,el al.A Space weather events in July 1982 and October 2003 and the effects of geomagnetically induced currents on Swedish technical systems[J].Annals Geophysical,2009,27(4):1775–1787.
10Ptitsyna N G,Kasinskii V V,Villoresi G,et al.Geomagnetic Effects on Mid-Latitude Railways:A Statistical Study of Anomalies in the Operation of Signaling and Train Control Equipment on the East-siberian Railway[J].Med Sci Entry for Advances in Space Research,2008,42(9):1510-1514.