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2. Kyutech, United Nations/Japan long-term fellowship Programme “Post-graduate study on Nano-satellite Technologies”, http://cent.ele.kyutech.ac.jp/unitednations.html (accessed Sep. 7, 2017).
3. United Nations Office for Outer Space Affairs, Basic space technology initiative fellowship Programme, http://www.unoosa.org/oosa/en/ourwork/psa/bsti/fellowships.html (accessed Sep. 7, 2017).
4. Five-year results of the world's first graduate-school-level space engineering fellowship program conducted between the UN and a university – called the PNST program, IAC-17-E1.4.1.x38613;Maeda,2017
5. UN/Japan Long-term Fellowship Programme on Nano-satellite Technologies, COPUOS 59th Session, Vienna, Austria;Maeda,2016