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| At Chalmers Univ. of Tech., Aug. 8, 2017. |
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| At Danshaku-Tei restaurant in Chofu, Feb 8, 2012. |
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| At Chalmers Univ. of Tech., Sep, 2010 | At Chalmers Univ. of Tech., Sep, 2010 |
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| At Chofu on May 16, 2009. |
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| At Chofu on Mar. 24, 2009. | At Chofu on Mar. 14, 2009. |
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| At Chalmers University of Technology on Dec. 19, 1999. | At Nanjing University on May 12, 1999. |