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\begin{quote}  This article was published as {\it A measure of total research impact independent of time and discipline}. Alberto Pepe, Michael J. Kurtz. PLoS One. 7(11): e46428. \url{doi:10.1371/journal.pone.00464282012}. (Open Access Article)  \end{quote}  {\small \textbf{Abstract}. Authorship and citation  practices evolve with time and differ by academic discipline. As such,  indicators of research productivity based on citation records are