For the purposes of this Agreement, notices and all other communications provided for in, or required under, this Agreement must be in writing and will be deemed to have been duly given when personally delivered or when mailed by United States registered or certified mail, return receipt requested, postage prepaid and addressed to each party’s respective address set forth on the first page of this Agreement (provided that all notices to the Company must be directed to the attention of the General Counsel), or to such other address as either party may have furnished to the other in writing in accordance with these provisions, except that notice of change of address will be effective only upon receipt.