About GAAP and IFRS
GAAP (wikipedia) Comparison of IFRSs and US GAAP (iasplus.com) IFRS and US GAAP: similarities and differences: September 2010 (pwc)
GAAP (wikipedia) Comparison of IFRSs and US GAAP (iasplus.com) IFRS and US GAAP: similarities and differences: September 2010 (pwc)