1. Danneel, H.L. Uber den durch diffundierende Gase her vorqerufenen Restom. Z Electrochemie 1897/1898; 4: 227–242.
2. Kramer, K Ein Verfahren zur fortlaufenden Messung des Saverstoffgehaltes in stromenden Blute an uneroffneten Gefassen. Z fur Biologie 1935, 96: 61–75.
3. Millikan GA, Pappen heimer JR, Rawson AS, Hervey, J Continuous measurement of oxygen saturation in man. American Journal of Physiology 133:390, 1941.
4. Elam Jo, Neville JF, Sleator W, Elam WN Sources of error in oximetry. Ann. Surg. 130:755–773, 1949.
5. Var Slyke DD, Neill JM The determination of gases in blood and other solutions by vacum extraction and manometric measurement. J. Biol chem 61:523–573, 1924.