Moreton, G. E. (1960). "Hα Observations of Flare-Initiated Disturbances with Velocities ~1000 km/sec". Astronomical Journal. 65: 494. Bibcode:1960AJ.....65U.494M. doi:10.1086/108346.
Moreton, G. E. (1960). "Hα Observations of Flare-Initiated Disturbances with Velocities ~1000 km/sec". Astronomical Journal. 65: 494. Bibcode:1960AJ.....65U.494M. doi:10.1086/108346.