His current h-index is 23, relatively low for such a prodigious number of citations. He has in total over 65 000 citations to which he contributed almost exclusively (92.9% of all citations) with one single paper regarding the method he introduced in 1987 ( Chomczynski and Sacchi, 1987). A good example is the inventor of the RNA isolation method, Piotr Chomczynski. Nevertheless, it assumes that researcher A, who published a breakthrough story that was extensively cited, should deserve less respect than researcher B who publishes often and regularly however, the outcome of the latter's work has not contributed yet to any remarkable discovery. The initial idea of Hirsch was to discriminate the investigators who are persistently productive from those who experienced an isolated auspicious moment in their scientific life, and who currently only cut coupons from their popularity roll. Rather, such an achievement must satisfy both issues: a considerable number of articles must be highly cited, which is reflected by ranking them according to the number of citations they have collected, and finding the one where the position on the list equals or is less than the number of the citations it garnered. That is, to be the proud owner of a high h-index, it is not sufficient to have authored many articles or for some of them to have been extensively cited.

According to its inventor, the h-index is the number of papers coauthored by the investigator with at least h citations each ( Hirsch, 2005). Surprisingly, many decision-makers apparently are not fully aware of what it represents. As a result, it has become a “must have” indicator when applying for funds or a new position. Originally introduced as a simple characterization of the scientific output of a researcher ( Hirsch, 2005), the h-index has come to be uncritically regarded as a “magic tool” that is applied to measure what is unmeasurable-the quality of science. However, it not only appears that h- index has taken on a life of its own but also that the popularity of this formula currently surpasses the initial idea for its use envisioned by the inventor. Hirsch, that attempts to measure the achievements of a research scientist. Last year we “celebrated” the 10th anniversary of the invention of the h-index (also known as the Hirsch factor Hirsch, 2005), an indicator created by Jorge E.

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