1. Interplanetary magnetic sector structure 1926–1971;Svalgaard;R-29, Det Danske Meteorological Institut,1972
2. Catalogue of S.M.Mansurov: Polarity of the Interplanetary Magnetic Field during 1957–1983;Zaitzev,1984
3. Polarity maps of the global magnetic field of the Sun and the configuration of the interplanetary current sheet in 1971–1978;Korzhov,1982
4. The solar magnetic field 1976 through 1985;Hoeksema;Report UAG-94,1986
5. Regularities of variation of the Heliospheric Current Sheet orientation during the solar activity cycle;Gulyaev;Solar Phys.,1992