1. Acceleration of cosmic rays in solar flares;Parker;Phys. Rev.,1957
2. “The Sun”;Kiepenheuer,1953
3. On the origin of solar flares;Gold;Monthly Notices Roy. Astron. Soc.,1959
4. Observations of solar magnetic fields in plage regions;Leighton;Astrophys. J.,1959
5. Solar flares as a pinch-effect;Severny,1958