- YouTube Post: https://support.google.com/youtube/answer/11161123
- YouTube Video: https://www.youtube.com/watch?v=4MpAKk1M-Ok
- Amazon Being Sued Article: https://www.theverge.com/2021/9/29/22701144/amazon-chinese-companies-lawsuit-paid-reviews
- Amazon's Service Bussiness Solution Agreement: https://sellercentral.amazon.com/gp/help/external/G1791?language=en_US&ascsubtag=[]vg[p]22465185[t]w[d]D
- Gefell History: http://recordinghacks.com/pdf/gefell/historymicrotechgefell.pdf
- Sweetwater Video on Power Conditioners: