premise: Within ten (10) days following the receipt of a written request referencing this Agreement and this paragraph from either party furnishing Information hereunder, the receiving party will deliver to the furnishing party all tangible materials containing or embodying the Information received from the furnishing party, except for materials containing Information which has been incorporated into analyses, compilations, comparisons, studies or other documents prepared by the receiving party or its representatives, together with a certificate executed by the receiving party certifying that all such materials in the receiving party's possession have been delivered to the furnishing party or destroyed.  That portion of the Information which has been incorporated into analyses, compilations, comparisons, studies or other documents prepared by the receiving party or its representatives shall be held by the receiving party and kept confidential as provided above, or shall be destroyed.