Studying the international diffusion of a national scientific journal
 Artikel Jurnal
National characteristics in international scientific co-authorship relayion
 Artikel Jurnal
International journal
University of Toronto Press, 2018
 Majalah, Jurnal, Buletin
Presiden Scientific Journal of Interdisciplinary Studies : scientific journal of president university
Bekasi : President University, Jababeka Education Park, 2006,
 Majalah, Jurnal, Buletin
Siam journal on scientific and statistical computing
The Society for Industrial and Applied Mathematics , 2018
 Majalah, Jurnal, Buletin
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