Neupert, Werner (July 1968). "Comparison of Solar X-Ray Line Emission with Microwave Emission during Flares". Astrophysical Journal. 153: L59. Bibcode:1968ApJ...153L..59N. doi:10.1086/180220.
Neupert, Werner (July 1968). "Comparison of Solar X-Ray Line Emission with Microwave Emission during Flares". Astrophysical Journal. 153: L59. Bibcode:1968ApJ...153L..59N. doi:10.1086/180220.