Meetings of the Board of Directors may be called by the Chairman, the President or upon the written request of two Directors, on 24 hours’ notice to each Director, either personally or by telephone or by mail, telegraph, telex, cable, wireless or other form of recorded or electronic communication, or on such shorter notice as the person or persons calling such meeting may deem necessary or appropriate in the circumstances. Notice of any such meeting need not be given to any Director, however, if waived by such Director in writing or by telegraph, telex, cable, wireless or other form of recorded or electronic communication, or if such Director shall be present at such meeting.