Microwave tomography of solar magnetic fieldsA. Grebinskij, V. Bogod, G. Gelfreikh, S. Urpo, S. Pohjolainen and K. ShibasakiAstron. Astrophys. Suppl. Ser., 144 1 (2000) 169-180DOI: https://doi.org/10.1051/aas:2000202