1 Subjects: “...The Energy Wall...”

2 Subjects: “...energy efficiency...”

3 Subjects: “...energy flows...”

4 Subjects: “...renewable energy sources...”

5 Subjects: “...renewable energy sources...”

6 Subjects: “...renewable energy...”

7 Subjects: “...complex energy supply systems...”

8 Subjects: “...energy-based approach...”

9 Subjects: “...energy-based approach...”

10 Subjects: “...energy-based approach...”

11 Subjects: “...high-energy ion irradiation...”

12 Subjects: “...strain energy density (SED)...”

13 Subjects: “...energy...”

14 Subjects: “...METRIC energy balance model...”

15 Subjects: “...METRIC energy balance model...”