Hide, R. (1989). «Fluctuations in the Earth's Rotation and the Topography of the Core–Mantle Interface». Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences328 (1599): 351-363. Bibcode:1989RSPTA.328..351H. doi:10.1098/rsta.1989.0040.
Eubanks, T. M.; Steppe, J. A.; Dickey, J. O.; Callahan, P. S. (1985). «A Spectral Analysis of the Earth's Angular Momentum Budget». Journal of Geophysical Research90 (B7): 5385. Bibcode:1985JGR....90.5385E. doi:10.1029/JB090iB07p05385.
Hide, R. (1989). «Fluctuations in the Earth's Rotation and the Topography of the Core–Mantle Interface». Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences328 (1599): 351-363. Bibcode:1989RSPTA.328..351H. doi:10.1098/rsta.1989.0040.
Eubanks, T. M.; Steppe, J. A.; Dickey, J. O.; Callahan, P. S. (1985). «A Spectral Analysis of the Earth's Angular Momentum Budget». Journal of Geophysical Research90 (B7): 5385. Bibcode:1985JGR....90.5385E. doi:10.1029/JB090iB07p05385.