1. The ALERT signal of ground level enhancements of solar cosmic rays: Physics basis, the ways of realization and development;Anashin;paper icrc1104 presented at 31st ICRC, Łódź, Poland,2009
2. GeV particle acceleration in solar flares and ground level enhancement (GLE) events;Aschwanden;Space Sci. Rev.,2012
3. The first GLE of the new 24th solar cycle;Balabin;paper icrc0021 presented at 33rd ICRC, Rio de Janeiro, Brazil,2013
4. GLEs in the last three solar cycles;Belov;paper icrc0993 presented at Proc. 31st ICRC, Łódź, Poland,2009
5. The relativistic solar particle event of May 17th, 2012 observed on board the International Space Station;Berrilli;J. Space Weather Space Clim.,2014