Hajar, Sotudeh, Yaghtin Maryam, Hajar Sotudeh, and Maryam Yaghtin. 2017. “The Impact of Scientific Career Duration on Evaluating researchers’ Scientific Productivity: The Case of Iran’s Papers Indexed in SCI During 1991-2011”. Malaysian Journal of Library and Information Science 20 (3). https://mjlis.um.edu.my/index.php/MJLIS/article/view/1775.