1. Cara M, Martin L: L'Exploration Functionelle Pulmonaire. Paris, Flammarion, 1984, pp 97-112
2. Bates VD, Macklem TP, Christie VR: Respiratory Function in Disease. Philadelphia, WB Saunders Co, 1971, pp 93-95
3. Von Oettinger WF: Poisoning: A Guide to Clinical Diagnosis and Treatment (2nd ed). Philadelphia, WB Saunders Co, 1958
4. Patty FA: Toxicology (2nd ed): Industrial Hygiene and Toxicology (vol 2). New York, John Wiley and Sons, Inc, 1963
5. Fairhill LT: Industrial Toxicology (2nd ed). New York, Hafner Publishing Co, 1969