A Comparison of EUV Spectroheliograms and Photospheric MagnetogramsDOI: info:10.1007/BF00149602v. 34105–111
Gurman, Joseph B., Withbroe, George L., and Harvey, John W. 1974. "A Comparison of EUV Spectroheliograms and Photospheric Magnetograms." Solar Physics, 34 105–111. https://doi.org/10.1007/BF00149602.