white papers about pegasus spyware?

I was looking to read something in detail about pegasus spyware. I found 2 things to read so far but I wanted to see if you guys have any other suggestions.

things that I found so far

[https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-into-nso-zero-click.html?m=1](https://googleprojectzero.blogspot.com/2021/12/a-deep-dive-into-nso-zero-click.html?m=1)

[https://info.lookout.com/rs/051-ESQ-475/images/lookout-pegasus-technical-analysis.pdf](https://info.lookout.com/rs/051-ESQ-475/images/lookout-pegasus-technical-analysis.pdf) ( this one is from 2016 tho )

cybersecurity papers pegasus pegasus spyware spyware white papers