Healthy nature healthy people: ‚contact with nature‘ as an upstream health promotion intervention for populations.

Cecily Maller, Mardie Townsend, Anita Pryor, Peter Brown, Lawrence St Leger
Health Promotion International, Volume 21, Issue 1, March 2006, Pages 45–54

https://academic.oup.com/heapro/article/21/1/45/646436