All notices, demands or other communications given hereunder shall be in writing and shall be sufficiently given if transmitted by facsimile or delivered either personally or by a nationally recognized courier service marked for next business day delivery or sent in a sealed envelope by first class mail, postage prepaid and either registered or certified, return receipt requested, to the address for each Party as provided on the signature pages hereto, or to such other address as any such Party shall designate in writing. Any such notice, demand or communication shall be deemed to have been given (a) on the date of delivery, if delivered personally, (b) on the date of facsimile transmission, receipt confirmed, (c) one business day after delivery to a nationally recognized overnight courier service, if marked for next day delivery or (d) five business days after the date of mailing, if mailed.