On the period ratio P/2P in the oscillations of coronal loopsM. P. McEwan, G. R. Donnelly, A. J. Díaz and B. RobertsA&A, 460 3 (2006) 893-899DOI: https://doi.org/10.1051/0004-6361:20065313
/2P
in the oscillations of coronal loops/2P in the oscillations of coronal loops