Jeffreys, H. (1931). Cartesian tensors. C.U.P..
Lua i Stíl Chicago (17ú heag.)Jeffreys, Harold. Cartesian Tensors. Cambridge: C.U.P., 1931.
Lua MLA (8ú heag.)Jeffreys, Harold. Cartesian Tensors. C.U.P., 1931.
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