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==Links== | ==Links== | ||
* [http://www.vintagetek.org/wp-content/uploads/2011/10/7104-Springer-article-email-res.pdf Hans Springer: Breakthroughs throughout push scope to 1 GHz] | * [http://www.vintagetek.org/wp-content/uploads/2011/10/7104-Springer-article-email-res.pdf Hans Springer: Breakthroughs throughout push scope to 1 GHz] | ||
[[Category:Cathode ray tubes]] |