1 Subjects: “...emissions trading system...”

2 Subjects: “...CO2 emissions prediction...”

3 Subjects: “...greenhouse gas emission...”

4 Subjects: “...emission reductions...”

5 Subjects: “...carbon dioxide emissions...”

6 Subjects: “...emissions generated by ships...”

7 Subjects: “...carbon emission intensities...”

8 Subjects: “...non-exhaust emissions...”

9 Subjects: “...radiated emission...”

10 Subjects: “...emissivity...”

11 Subjects: “...emissivity...”

12 Subjects: “...emissions...”

13 Subjects: “...zero emissions...”

14 Subjects: “...carbon emission...”

15 Subjects: “...acoustic emission...”