All notices, requests, demands and other communications to be given pursuant to this Agreement shall be in writing and shall be deemed to have been duly given if delivered by hand or mailed by registered or certified mail, return receipt requested, postage prepaid, to the addresses set forth at the beginning of this Agreement or such other address as a party shall have designated by notice in writing to the other party, provided that notice of any change in address must actually have been received to be effective hereunder.