Sources

Neil Price:

- https://www.amazon.com/Viking-Way-Magic-Mind-Scandinavia/dp/1842172603

- https://www.youtube.com/watch?v=nJZBqmGLHQ8

- https://www.youtube.com/watch?v=uu2gN8n15_A

- https://www.youtube.com/watch?v=7Db9sG1PSsQ

Jackson Crawford:

- https://www.youtube.com/watch?v=VMTEFza9U5s&t=667s

- https://www.youtube.com/channel/UCXCxNFxw6iq-Mh4uIjYvufg

Mathias Nordvig

- https://www.youtube.com/watch?v=hisDrf7MAw0