6. Conclusions
A general bibliometric overview of OR-MS was presented. Most of the results are in accordance with the perception of the academic community, although some interesting differences were found when looking to the numerical results obtained by the journals, the articles and the authors of the analysis. First, the American school is the most dominant in OR-MS. The USA leads the two most influential journals in the field: Management Science and Operations Research. The most popular authors come from America, such as Cooper and Charnes, and Americans have published most of the leading articles of all time. Canada has also shown very productive and influential results in this field. Second, Continental Europe has been increasing its influence with the publication of EJOR. Third, the Chinese school is much younger but already has a strong position with several leading researchers. Finally, the British school also has a strong influence with the publication of JORS.
From the results of this study, it is possible to identify some of the most productive and influential research in OR-MS in terms of journals, papers and authors. However, an important limitation is that they only provide a general orientation, and there is a lot of good research in OR-MS that has not been included in this paper. Furthermore, there are many discussions on how to evaluate publications because the values of different journals are not equal, and the consideration of this issue may lead to significant changes in the rankings generated from this study.
