1 Subjects: “...cluster analysis...”

2 Subjects: “...hierarchical clustering...”

3 Subjects: “...cluster control strategy...”

4 Subjects: “...cluster...”

5 Subjects: “...hierarchical clustering...”

6 Subjects: “...twostep cluster analysis...”

7 Subjects: “...cluster analysis...”

8 Subjects: “...clustering...”

9 Subjects: “...self-organizing maps clustering...”

10 Subjects: “...clustering...”

11 Subjects: “...fuzzy clustering analysis...”

12 Subjects: “...clustering AE signal...”

13 Subjects: “...clustering AE signal...”

14 Subjects: “...cluster analysis...”

15 Subjects: “...cluster analysis...”

16 Subjects: “...cluster analysis...”