EXHIBIT A JOINT FILING AGREEMENT
EXHIBIT A
The undersigned hereby agree jointly to prepare and file with regulatory authorities a
Statement on Schedule 13D/A reporting a material change in facts and hereby affirm that such
Statement on Schedule 13D/A is being filed on behalf of each of the undersigned in accordance with
Rule 13d-1(k)(1) under the Securities Exchange Act of 1934. This agreement may be executed in two
or more counterparts, each of which shall be deemed an original, but all of which together shall
constitute one and the same instrument.
Dated: November 30, 2006
| /s/ XXXXX XXXXXXXX | ||||
| Xxxxx Xxxxxxxx | ||||
| BERGENIE ANSTALT |
||||
| By: | Präsidial Management Anstalt | |||
| Director of Bergenie Anstalt | ||||
| By: | /s/ XXXX XXXXXX | |||
| Name: | Xxxx Xxxxxx | |||
| Title: | Director | |||
| By: | /s/ JOHANNES DÜR | |||
| Name: | Johannes Dür | |||
| Title: | Director | |||
