In the course of this study, there have been some limitations that should be reviewingreviewed. The main limitation concerns the data collection. As was previously mentioned, the data was conducted using exclusively the ISI Web of Science database, selectedselecting a sample of articles published in academic journals wholly dealing inconcerning only the categories of Management and Business. That thisTherefore, not all issues and areas have been covered. Moreover, other published material such as books, reports, and proceedings are not measured in the analysis. As such, it wouldshould be considered necessary, in the development of future research works, to integrate other categories that might not have been included in the sample, in order to harmonize the results achieved in this study. Furthermore, the dataset was executed covering the last twenty years until December 2016, which point outmeans that theany articles published after this period, as well as the publications which did not have enough time to be cited in the literature and appear in the databases of citations and co-citations, have been overlooked. An additional constraint in relation to the dataset of this study, is that only the first cited author is referenced in the database of Web of ScienceScience database used in the citations analysis. Although thesome filtering, improvement, and standardization has been achieved by different software and thethen independently reviewed by the authors, there is also a probability of errors, mostly caused by the similar name that they havebecause many different authors have similar names, or by spelling errors.