“…The source, context and extent of the corpus will define the purpose and unit of analysis of the bibliometric study. Therefore, it is possible to perform this type of analysis to study the behaviour of a variety of academic units, including journals [18,57,46,16,53,32], individual authors [1,40,9,34], scientific disciplines [23,33,43,42], emerging topics [13,55,51], universities [12,44,54], university programs or departments [39,36,19,29] and even nation-wide assessments of specific thematic disciplines [25,60,27,47].…”