TY - JOUR A1 - Love, J. J. T1 - Long-term biases in geomagnetic K and aa indices JO - Ann. Geophys. J1 - ANGEO VL - 29 IS - 8 SP - 1365 EP - 1375 Y1 - 2011/08/19 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/29/1365/2011/ L1 - https://angeo.copernicus.org/articles/29/1365/2011/angeo-29-1365-2011.pdf DO - 10.5194/angeo-29-1365-2011 ER -