**7. Bibliometric analysis of keywords**

#### **7.1 The concept of sustainability with related main keywords**

A keyword search carried out on the subject of "TITLE-ABS-KEY (sustainability)" generated almost 286,025 keywords in the Scopus database. From this database, by specifying exclusively the articles, a collection of 188,662 documents was listed using the command TITLE-ABS-KEY (sustainability) AND (LIMIT-TO (DOCTYPE, "ar"). Finally, from this list of articles, the first 2000 articles were considered for keyword analysis. VOSviewer was used to generate the keyword maps. **Figure 1** below shows all the keywords according to the topics covered in this presentation.

As shown in **Figure 3**, the major concepts found to be associated with the concept of sustainability in the articles published between 2015 and 2017 include keywords such as corporate sustainability, sustainability assessment, sustainability indicators, sustainability reporting, urban sustainability, higher education, sustainability education, life cycle sustainability, energy, decision making, and sustainability criteria. In addition, new concepts such as COVID-19, firm performance, organizational sustainability, theory building, waste, and bio-based products have been commonly used in 2020s. It suggests that the research on sustainability keeps on developing by deriving new concepts.
