*F R Stephenson, L V Morrison (1995), "Long-Term Fluctuations in the Earth's Rotation: 700 BC to AD 1990", "Royal Society (London), Philosophical Transactions, Series A" (ISSN 0080-4614), vol.351 (1995), #1695, pp.
* F R Stephenson, L V Morrison (1995), «Long-Term Fluctuations in the Earth’s Rotation: 700 BC to AD 1990», "Royal Society (London), Philosophical Transactions, Series A" (ISSN 0080-4614), vol.351 (1995), #1695, pp.