1. A durable glass electrode;Mcinnes;Ind Eng Chem,1933
2. Electrical measurement of the PCO2 of blood;Stow;Am J Physiol,1954
3. Electrodes for blood PO2 & PCO2 determination;Severinghaus;J Appl Physiol,1958
4. Monitor and control of blood and tissue oxygen measurements;Clark;Trans Am Soc Artif Intern Organs,1956
5. Blood Gas Monitoring;Clutton-Brock,1994