"Info iptek" (in Indonesian). Indonesian State Ministry of Research and Technology (RISTEK). 26 May 2008. Archived from the original on 20 September 2008. Retrieved 5 February 2009.
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"Info iptek" (in Indonesian). Indonesian State Ministry of Research and Technology (RISTEK). 26 May 2008. Archived from the original on 20 September 2008. Retrieved 5 February 2009.