Having identified the appropriate accounting literature under U.S. GAAP, what is the appropriate authoritative literature for recognizing and measuring the claims liability under IFRSs? Is there a difference in the recognition or measurement criteria in IFRSs as compared to U.S. GAAP? Having identified the appropriate accounting literature under U.S. GAAP, what is the appropriate authoritative literature for recognizing and measuring the claims liability under IFRSs? Is there a difference in the recognition or measurement criteria in IFRSs as compared to U.S. GAAP?