Copenhagen and beyond: historians of science
- Mara Beller from Israel; 
 - 
Jim Bennett and John Heilbron from the UK;
 - 
Cathryn Carson, David 
Cassidy, Jan Golinski, Alexei Kojevnikov, Thomas Powers (whose book,
Heisenberg's War, provided Frayn with crucial incentive for
writing the play)
and Mark Walker from the US;
 - 
Matthias Dörries, Michael Eckert, Klaus Hentschel, and
Dieter Hoffmann from Germany;  
 - Robert Marc Friedman from Norway; 
 - 
and
Kostas Gavroglu from Greece.