Talk:Marshall coil

Changes and sources
First I took out ref 7, which did not deliver the required support for that section's content. Then I noticed that this section was a word-for-word copy of content in ref 6. Therefore I shortened the content and repeated ref 6. There is a lack of independent overview sources in this article. However, I have no doubt that the Marshall coil was a significant development, so the general tenor of the article seems sound. Macdonald-ross (talk) 14:17, 8 January 2017 (UTC)