1 Subjects: “...effective Yang-Mills action...”

2 Subjects: “...intra-action...”

3 Subjects: “...action research...”

4 Subjects: “...EC actions...”

5 Subjects: “...action observation...”

6 Subjects: “...action observation...”

7 Subjects: “...collective action...”

8 Subjects: “...waves action...”

9 Subjects: “...compressive membrane action...”