Lamb, Horace (1883-01-01). "XIII. On electrical motions in a spherical conductor". Philosophical Transactions of the Royal Society of London. 174: 519–549. doi:10.1098/rstl.1883.0013. S2CID111283238.
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Lamb, Horace (1883-01-01). "XIII. On electrical motions in a spherical conductor". Philosophical Transactions of the Royal Society of London. 174: 519–549. doi:10.1098/rstl.1883.0013. S2CID111283238.