Котушка Удена (Ukrainian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Котушка Удена" in Ukrainian language version.

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Strong, Frederick Finch (1908). High-frequency currents. Rebman Company. с. 41.
Curtis, Thomas Stanley (1916). High Frequency pparatus: Its Construction and Practical Application. New York: Everyday Mechanics Co. Inc. с. 45—47.
Martin, James M. (1912). Practical electro-therapeutics and X-ray therapy. C.V. Mosby Co. с. 187—192.