1 Subjects: “...smart factories...”

2 Subjects: “...smart maintenance factory...”

3 Subjects: “...full factorial design...”

4 Subjects: “...factorial design...”

5 Subjects: “...extended degenerate r-central factorial numbers of the second kind...”

6 Subjects: “...factorial design...”

7 Subjects: “...software factory...”

8 Subjects: “...factorial design...”

9 Subjects: “...factorial structure/psychometric properties/structural validity/validation...”

10 Subjects: “...software factory...”

11 Subjects: “...factorial analysis...”

12 Subjects: “...factorial surveys...”

13 Subjects: “...factory...”

14 Subjects: “...smart factory...”

15 Subjects: “...plant factory...”

16 Subjects: “...plant factory...”

17 Subjects: “...Higgs factory...”

18 Subjects: “...factorial design...”

19 Subjects: “...DIgSILENT-PowerFactory...”

20 Subjects: “...full factorial methods...”