Romano R., Giordano A., Paduano A., Sacchi R., Spagna Musso S., 2009, EVALUATION OF FRYING OIL SUBJECTED TO PROLONGED THERMAL TREATMENT: VOLATILE ORGANIC COMPOUNDS (VOC) ANALYSIS BY DHS-HRGC-MS AND 1H-NMR SPECTROSCOPY, Chemical Engineering Transactions, 17, 873-878.