All notices, requests and demands to or upon a party hereto shall be in writing and shall be deemed to have been duly given when delivered by hand or three days after being deposited in the mail, postage prepaid or, in the case of facsimile notice, when received, addressed as follows or to such other address as either party may have furnished to the other in writing in accordance herewith, except that notices of change of address shall be effective only upon receipt.