Missing Section on "Analytic Evaluation of Filter Performance", can you recommend other resources?

[Homefly]

Hello, I'm greatly enjoying and benefiting from your book. I noticed the section on "Analytic Evaluation of Filter Performance" is missing content. Could someone recommend some resources for learning about the topic? It would help me a lot with a project I'm working on. I have a math and statistics background. Thank you!

[rlabbe]

Zarchan goes into it a bit. in a very readable way. Crassidis is more 'mathy', but he covers it some too.