1. Demidov, M.L., How reliable are observations of solar magnetic fields? Comparison of full-disk measurements in different spectral lines and calibration issues of space missions SOHO, Hinode, and SDO, Proc. 273 IAU Symp., 2011, Choudhary, D.P. and Strassmeier, K.G., Eds., pp. 374–378.
2. Grigoryev, V.M., Demidov, M.L., Ocak, B.F., and Peshcherov, V.S., Methods of measuring the general characteristics of the Sun employed at the Sayan solar observatory, Contrib. Astron. Observatory Skalnate Pleso, 1986, vol. 15, pp. 513–527.
3. Makarov, V.I. and Sivaraman, K.R., Evolution of latitude zonal structure of the large-scale magnetic field in solar cycles, Sol. Phys., 1989, vol. 119, pp. 35–44.
4. Makarov, V.I., Fatianov, M.P., and Sivaraman, K.R., Poleward migration of the magnetic neutral line and the reversal of the polar fields on the Sun, Sol. Phys., 1983, vol. 85, pp. 215–226.
5. Mordvinov, A.V. and Yazev, S.A., Reversals of the Sun’s polar magnetic fields in relation to activity complexes and coronal holes, Sol. Phys., 2014, vol. 289, pp. 1971–1981.