1 Subjects: “...knowledge network theory...”

2 Subjects: “...legitimacy theory...”

3 Subjects: “...human health, human-nature connection theory...”

4 Subjects: “...reference group theory...”

5 Subjects: “...actor-network theory...”

6 Subjects: “...Unified Theory of Acceptance and Use of Technology...”

7 Subjects: “...ecological niche theory...”

8 Subjects: “...grounded theory...”

9 Subjects: “...grounded theory...”