EX-99.A 2 c82321exv99wa.htm EXHIBIT A Exhibit A
Exhibit A
JOINT FILING UNDERTAKING
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.
Dated: March 9, 2009.
             
    Yorktown Avenue Capital, LLC    
 
            
 
  By:   /s/ Stephen J. Heyman     
 
     
 
Stephen J. Heyman, Manager 		   
 
            
    /s/ Stephen J. Heyman     
    Stephen J. Heyman    
 
            
    /s/ James F. Adelson     
    James F. Adelson