Links
Ebihara technique
- https://bonsaitonight.com/2009/02/14/ebihara/
- https://www.bonsainut.com/threads/ebihara-maples.18215/
Onuma technique
- https://www.instagram.com/bonsai.kazuo.oonuma/
- https://bonsaitonight.com/2020/03/03/onumas-mini-bonsai-growing-techniques/