1. AOCS recommended practice Ja 7-86 phospholipids in lecithin concentrates by thin-layer chromatography reapproved 1997. (Revised 2003)
2. AOCS official method Ja 7b-91 determination of lecithin phospholipids by HPLC. Reapproved 1997
3. Diehl BWK (2002) 31P-NMR in phospholipid analysis. Lipid Technol 14:62–65
4. AOCS official method Ja 7c-07 determination of lecithin phospholipids by HPLC-LSD. (Revised 2007)
5. Spyros A, Dais P (2009) 31P NMR spectroscopy in food analysis. Progr Nucl Magn Reson Spectrosc 54:195–207