1 Subjects: “...time-variant efficiency...”

2 Subjects: “...technical efficiency...”

3 Subjects: “...street connectivity and efficiency...”

4 Subjects: “...street connectivity and efficiency...”

5 Subjects: “...SBM of super-efficiency...”

6 Subjects: “...technical efficiency...”

7 Subjects: “...energy efficiency...”

8 Subjects: “...super-efficient SBM...”

9 Subjects: “...Chinese provincial input efficiency...”

10 Subjects: “...green innovation efficiency...”

11 Subjects: “...pump efficiency...”

12 Subjects: “...energy efficiency...”

13 Subjects: “...efficiency measurement...”

14 Subjects: “...efficiency performance...”