Gruber, D., Lachowicz, P., Bissaldi, E., Briggs, M. S., Connaughton, V., Greiner, J., et al. (2011). Quasi-periodic pulsations in solar flares: new clues from the Fermi Gamma-ray Burst Monitor. Astronomy & Astrophysics, 533: A61, pp. 1-7. doi:10.1051/0004-6361/201117077.