The affiliations of the authors were extracted from the RIS file in BibExcel. For each affiliation, the city where the
organization is located was obtained. Using the coordinates of these cities in gpsvisualizer.com, Fig. 2 shows the geographical
locations of organizations contributing to the literature. The size of the red circles is proportional to the contribution degree
of each organization. Greater density of contributing organizations can be found in the Western Europe and the Eastern
United States. The figure also provides a summary of the number of articles published by the contributing counties. The
top performing organizations, their geographical locations and the quantity of the contributing articles are shown in Table 5.
The geographical dispersion of these organizations demonstrates that green ports and maritime logistics has attracted
organizations and research centers from around the globe, with numerous contributions from researchers and practitioners
in Europe and North America