To supplement Vogel's work is the practice called Pranic Healing by Master Choa Kok Sui. His crystal are rounded at the end, so the practitioner does not absorb as much of the patients energetic debris.

Here are some books and articles on Pranic Healing.

Master Choa Kok Sui - Meditation On Twin Hearts With Self-Pranic Healing

To keep it accessible, here is the main link for all things Marcel Vogel: https://icedrive.net/s/2fG81iYfwXVaztu2ZZ7y8YA3Xi41

Master Choa Kok Sui - OM Meditation

Here is a nice little mind map outlining some theories on the polarized spiraling energies projected from the Aether.

THE DYNAMIC AETHER AND THE POLARIZED, SPIRALING ENERGIES OF CREATION AND DISSOLUTION

(Navigable Mind Map)

https://mm.tt/map/2342812120

This interactive mindmap ties together the work of various pioneers and traditions related to the aether and the male/female, spiraling energies of the virtual reality in which we live. It includes the work of Walter Russell, Nikolai Kozyrev, Baron von Reichenbach, Radiesthesia, Ibrahim Karim, modern physics and more.

It currently has a few clickable links and comments you can explore, and many more will be added over time.

Here is a collection of texts by Philip Callahan and a few others on the effects of Paramagnetism on Agriculture.

https://icedrive.net/s/8wGzyPuXyfPFWStyibSkCRYvhgVb