TY - JOUR A1 - Lockwood, M. A1 - Forsyth, R. B. A1 - Balogh, A. A1 - McComas, D. J. T1 - Open solar flux estimates from near-Earth measurements of the interplanetary magnetic field: comparison of the first two perihelion passes of the Ulysses spacecraft JO - Ann. Geophys. J1 - ANGEO VL - 22 IS - 4 SP - 1395 EP - 1405 Y1 - 2004/04/02 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/22/1395/2004/ L1 - https://angeo.copernicus.org/articles/22/1395/2004/angeo-22-1395-2004.pdf DO - 10.5194/angeo-22-1395-2004 ER -