Table 5 Inclusion and exclusion criteria
Criterion one | Â | Criterion two | Â |
|---|---|---|---|
Inclusion of resources | Academic peer reviewed article that are relevant to the themes and contributed to fulfill the objectives of the research Grey literature based on the relevant of information discussed and the extra useful knowledge on the topic. Reports and news of the European Commission, ESPO, wbcsd, the Ellen MacArthur foundation, World Port Sustainable Program (WPSP), Organization for Economic Cooperation and Development (OECD), International Association of Port and Harbors (IAPH), Green port Initiative, and Loop Port were key inclusions. In addition to reports of consulting companies such as Accenture and Mc Kinsey | Exclusion of resources | Academic peer reviewed articles that did not thoroughly discuss the review topic such as CE in ports or industrial symbiosis Grey literature studies with small differences that included repetitive results, had weak context or references, particularly conference proceedings, in addition to proceedings and reports, which were discussed thoroughly in academic literature |