1. K-Corona and magnetic sector boundaries;Hansen;Geophys. Res. Letters,1974
2. Observation of sectored structure in the outer solar corona: correlation with interplanetary magnetic field;Howard;to be published in Solar Phys.,1974
3. Heliographic latitude dependence of the dominant polarity of the interplanetary magnetic field;Rosenburg;J. Geophys. Res.,1969
4. Interplanetary magnetic sector structure 1926-1971;Svalgaard;Geophys. Paper R. 29, Danish Meteorological Inst., Charlottenlund,1972
5. Interplanetary sector structure at solar maximum;Wilcox;J. Geophys. Res.,1972