We were together :

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2002 York 2002 Quebec 2002 Geneva 2002 Geneva 2002 Beijing
2002: York 2002: MSA Meeting, Quebec, Canada 2002: XIX IUCr, Geneva, Switzerland 2002: XIX IUCr, Geneva, Switzerland 2002: Beijing
1996 Seattle 1997 Beijing 1998 Beijing 1999 Beijing 1999 Beijing
1996: XVII IUCr, Seattle, USA 1997: Friendship Hotel, Beijing 1998: Institute of Biophysics, Beijing 1999: Institute of Physics 1999: Institute of Physics
1988 Boston 1988 Himeji 1990 Erice 1992 Beijing 1995
Kuala Lumpur
1988: Boston, USA 1988: Himeji, Japan 1990: Summer School, Erice, Italy 1992: Institute of Physics, Beijing 1995: Kuala Lumpur, Malaysia
1980 Beijing 1981 York 1985 Beijing 1987 Beijing 1987 Perth
1980: Institute of Physics, Beijing 1981: Universtity of York, England 1985: Institute of Physics, Beijing 1987: Beijing Airport, leaving for Tokyo 1987: XIV IUCr, Perth