– The Hirsch index or h-index is widely used to quantify the impact of an individual’s scientific research output, determining the highest number h of a scientist’s papers that received at least h citations. Several variants of the index have been proposed in order to give more or less preference to highly cited papers. I analyse the citation records of 26 physicists discussing various suggesti...

The paper presents the results of the study of international and national cooperation of Ukrainian scientists from different scientific fields using citation analysis data from Scopus in the period of 2011-2015. The results show that during the period under study, the number of documents of highly cited Ukrainian scientists that have received enough citations to be included to the top 1%, 5% an...

BACKGROUND John Cunningham virus (JCV) constitutes a family of polyoma viruses, which plays important roles in the progressive multifocal leukoencephalopathy (PML) and tumorigenesis. However, no bibliometric investigation has been reported to guide the researchers and potential readers. METHODS Papers were collected from database Sci-expanded and Pubmed until May 22, 2008. The highly-producti...

This editorial examines the 10 most cited articles of 2018–2019 published in “Environmental Catalysis” section Catalysts journal [...]

While many papers achieve high impact over a long period of time, others have more immediate impact. One measure of that immediacy is citation frequency. If a paper is highly cited shortly after publication, it usually indicates that a new, active area of research is developing. or it may indicate a controversial topic. Providing lists of fast-track papers, however, does not necessarily identif...

There are several simple and sophisticated scientometric indicators generally applied in the literature (e.g. total number of publications and citations, citations per journal paper, relative citedness indexes, Hirsch index, etc.), which may characterize the publications of scientists both qualitatively and quantitatively. The calculation methods generally use data referring to the total set of...