https://aliceportman.com/noviles/
http://www.the9thhouse.org/dissertations.htm
https://advanced-astrology.com/anaretic-degree/
http://www.crystalwind.ca/astrology/astro-types/astrology-basics/the-7th,-9th,-and-11th-harmonic-series-aspects-and-their-symbols
https://advanced-astrology.com/past-life-indicators-in-synastry-karmic/