| 04-09-2010 | A. Mikhaylova | portrait | photo |
| 02-28-2011 | J. v.d. Heuvel | portrait | to discuss |
| 05-03-2011 | J. Hammer | portrait | to discuss |
| 07-02-2011 | H. Heintz | portrait | to discuss |
| 07-02-2011 | H. Heintz | portrait | to discuss |
| 01-01-2012 | H. van Weel | portrait | to discuss |
last update: January 5 2012 |
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