1. Nichelmann M. Thermoregulatorische Bedeutung der Mund- und Nasenhöhle vonHund und Katze. Monatsheft Vet Med 1981; 36: 64.
2. Macklem PT. Normal and abnormal function of the diaphragm. Thorax 1981; 36: 161.
3. Fossum TW. Pleural and extrapleural diseases. In: Ettinger SJ, Feldman EC, eds. Textbook of veterinary internal medicine; 5th ed. Philadelphia: Saunders, 2000; 1098-111.
4. Bouvy BM, Bjorling DE. Pericardial effusion in dogs and cats. i. Normal pericardium and causes and pathopysiology of pericardial effusion. Comp Cont Educ 1991; 13: 173-4.
5. Levi M, Hart W, Wieling W. Fysische diagnostiek – pulsus paradoxus. Ned Tijdschr Geneeskd 1999; 143: 2045-8.