Exhibit A JOINT FILING UNDERTAKING
Exhibit A
The undersigned, being duly authorized thereunto, hereby execute this agreement as an exhibit to
this Schedule 13D to evidence the agreement of the below-named parties, in accordance with the
rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule jointly on
behalf of each such party.
Signature Block
/s/ Xxxxxxx X. Xxxxxxx
By: Xxxxxxx X. Xxxxxxx, Manager
VALUE FUND ADVISORS, LLC
/s/ Xxxxxxx X. Xxxxxxx
By: Xxxxxxx X. Xxxxxxx, Manager
/s/ Xxxxxxx X. Xxxxxxx
Xxxxxxx X. Xxxxxxx
