Table 5.

Selected keywords extracted from citing research articles to bibliometric software tools (VOSviewer)

Cluster # (color)	Cluster name	Examples of keywords
Cluster 1 (red)	Information & Library Science	Information, library and information science, higher education, information literacy, databases, internet, journal analysis, knowledge discovery, deep learning, internet of things, big data, network visualization, data visualization, data mining, augmented reality, software, technology, emerging technology, disruptive technology
Cluster 2 (green)	Environment	Environment, environmental sustainability, climate change, CO2 emissions, coastal, ecosystems, greenhouse-gas emission, forest, soil, energy consumption, wastewater, biomass, biodiversity, toxicity, pollution, oxidation, nitrogen, heavy metals, GIS, data envelopment analysis
Cluster 3 (blue)	Health Sciences	Health, healthcare, public health, mental health, medicine, diagnosis, nursing, surgery, risk factors, diseases, infectious diseases, pandemic, SARS, COVID-19, pneumonia, obesity, meta-analysis, bibliometrics, Scopus, Web of Science, cancer, breast cancer, proteins, cells, metabolism, gene, mutations
Cluster 4 (yellow)	Business & Management	Business, business intelligence, management research, supply chain management, knowledge management, market orientation, financial performance, firm performance, predictive analysis, customer satisfaction, entrepreneurship, hospitality, tourism, sharing economy, globalization, leadership, patent analysis, data science
Cluster 5 (violet)	Citation Impact	Citation impact, citation analysis, cited references, research impact, authors, scientific impact, impact factors, ranking, h-index, international collaboration, institutions, productivity, output, patterns, centrality, historical roots, scholarly communication, big data research, altmetrics