リチャード・オールダム
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Oldham, R. D. (1900). “On the Propagation of Earthquake Motion to Great Distances”. Philosophical Transactions of the Royal Society A 194: 135–174. Bibcode: 1900RSPTA.194..135O. doi:10.1098/rsta.1900.0015. https://archive.org/details/philtrans09521374.
Oldham, R. D. (1906). “The Constitution of the Interior of the Earth, as Revealed by Earthquakes”.