All notices, requests, and other communications required or permitted to be given or delivered hereunder to the Holder of this Warrant shall be in writing, and shall be personally delivered, or shall be sent by certified or registered mail, postage prepaid, or by delivery service with proof of delivery, and addressed to the Holder at the address shown for the Holder on the books of the Partnership, or at such other address as shall have been furnished to the Partnership by notice from the Holder.  All notices, requests, and other communications required or permitted to be given or delivered hereunder to the Partnership shall be in writing, and shall be personally delivered, or shall be sent by certified or registered mail, postage prepaid, or by delivery service with proof of delivery, and addressed to the office of the Partnership at 1400 16 th  Street, Suite 310, Denver, Colorado 80202, Attention: General Counsel, or at such other address as shall have been furnished to the Holder of this Warrant by notice from the Partnership.  Any such notice, request, or other communication may be sent by facsimile but shall in such case be subsequently confirmed by a writing personally delivered or sent by certified or registered mail as provided above.  All notices, requests, and other communications shall be deemed to have been given either at the time of the delivery thereof to (or the receipt by, in the case of a facsimile) the person entitled to receive such notice at the address of such person for purposes of this Section 5 or, if mailed, at the completion of the third full day following the time of such mailing thereof to such address, as the case may be.