Any notice or other communication in connection with this Warrant shall be deemed to be given if in writing addressed as hereinafter provided and actually delivered at such address: (a) if to any Holder, at the registered address of such holder as set forth in the Warrant Register kept at the office of the Company maintained pursuant to Section 13.2(a) hereof, or (b) if to the Company, to the attention of its Chief Financial Officer at its office maintained pursuant to Section 13.2(a) hereof; provided , however , that the exercise of any Warrant shall be effective in the manner provided in Section 3 hereof.