Combining East and West Primal

https://www.primalastrology.com/primal-zodiac-by-combination.html

Aspect Patterns

https://cafeastrology.com/articles/aspectpatterns.html#trapeze-cradle

Minor Aspects Magick

https://timenomad.app/posts/astrology/philosophy/2019/05/30/minor-aspects-domain-of-magic.html

Astrology is Psychological Math

https://mathmistakes.info/facts/TrigFacts/learn/uc/nad.html