Neper (Hilfsmaßeinheit) (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Neper (Hilfsmaßeinheit)" in German language version.

refsWebsite
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archive.org

  • R. V. L. Hartley: "TU" becomes "Decibel". In: Bell Laboratories Record. 7. Jahrgang, Nr. 4. AT&T, Dezember 1928, S. 137–139 (englisch, archive.org [PDF]).

bipm.org

dke.de