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Re:Fast inverse chirp z-transform found by __john on Saturday October 12, 2019 @02:52AM (#21231135)
The link in the article was not paywalled for me (maybe it is for others?).

https://www.nature.com/articles/s41598-019-50234-9

Re:Fast inverse chirp z-transform found by Fronzie on Saturday October 12, 2019 @03:10AM (#21231184)
The publication itself also seems freely accessible:

https://www.nature.com/articles/s41598-019-50234-9.pdf