Except where verbal notice is specifically authorized in this Agreement, all notices hereunder shall be in writing and shall be deemed effectively given or served for all purposes when presented personally, upon receipt if sent by first class mail or over-night express, or on the date of transmission if sent by telegram, telex, or telecopy to any party hereto at the address set forth on the signature page hereof, or at such other address as any party shall subsequently designate by notice.