You can find the full ISU technical rulebook here:
https://www.isu.org/inside-isu/rules-regulations/isu-statutes-constitution-regulations-technical
Please note that there are small rule changes every year, and I've included what I think are the most updated rules, but there may be some inconsistencies!
Other sources:
https://slate.com/culture/2018/02/talking-back-flips-with-terry-kubicka-the-olympic-figure-skater-who-inspired-the-ban.html
https://www.liveabout.com/backflips-performed-by-figure-skaters-1282451
Opening Music:
Snapping - Chungha (instrumental)
https://youtu.be/4LTrYTc5y9I