1. High resolution mapping of the magnetic field of the solar corona;Altschuler;Solar Phys.,1977
2. Ground-based synoptic instrumentation for solar observations;Balasubramaniam;Proc. SPIE,2011
3. Henney C.J., Keller C.U., Harvey J.W. SOLIS-VSM Solar Vector Magnetograms, Solar Polarization 4, ASP Conference Series, vol. 358, Proceedings of the conference held 19–23 September, 2005, in Boulder, Colorado, USA. (Eds.) Casini R., Lites B.W. p. 92б, 2006.
4. The NASA/NSO spectromagnetograph;Jones;Sol. Phys.,1992
5. Benevolenskaya E.E., Kosovichev A.G., Scherrer P.H. Large-scale patterns of solar magnetic field and activity cycles. Magnetic Fields across the Hertzsprung-Russell Diagram ASP Conference Series, 2001, vol. 248, (Eds.) Mathys G., Solanki S.K., Wickramasinghe D.T. pp. 135–138.