TY - JOUR A1 - Khachikjan, G. Ja. A1 - Sofko, G. J. T1 - On 3 to 6 year cycles in the time of geomagnetic storm sudden commencement occurrence and ENSO climate cycles JO - Adv. Geosci. J1 - ADGEO VL - 6 SP - 87 EP - 93 Y1 - 2006/01/09 PB - Copernicus Publications SN - 1680-7340 UR - http://www.adv-geosci.net/6/87/2006/ L1 - http://www.adv-geosci.net/6/87/2006/adgeo-6-87-2006.pdf DO - 10.5194/adgeo-6-87-2006 ER -