K. J. Gunnerson and J. A. Kellum, “Acid-Base and Elec trolyte Analysis in Critically Ill Patients: Are We Ready for the New Millennium?” Current Opinion in Critical Care, Vol. 9, No. 6, 2003, pp. 468-473. http://dx.doi.org/10.1097/00075198-200312000-00002
 A. A. Sirker, A. Rhodes, R. M. Grounds and E. D. Ben nett, “Acid-Base Physiology: The ‘Traditional’ and the ‘Modern’ Approaches,” Anesthesia, Vol. 57, No. 4, 2002, pp. 348-356. http://dx.doi.org/10.1046/j.0003-2409.2001.02447.x
 O. Siggard-Andersen, P. D. Wimberly, N. Fogh-Andersen and I. H. Gothgen, “Measured and Derived Quantities with Modern pH and Blood Gas Equipment: Calculation Algorithms with 54 Equations,” Scandinavian Journal of Clinical & Laboratory Investigation, Vol. 48, Suppl. 189, 1988, pp. 7-15.
 D. D. Van Slyke, H. Wu and F. C. McLean, “Studies of Gas and Electrolyte Equilibria in the Blood. V. Factors Controlling the Electrolyte and Water Distribution in the Blood,” Journal of Biological Chemistry, Vol. 56, 1923, pp. 765-849.
 P. D. Constable and H. R. Stampfli, “Experimental De termination of Net Protein Change and Atot and Ka of Nonvolatile Buffers in Human Plasma,” Journal of Applied Physiology, Vol. 95, 2003, p. 620.
 M. Moviat, F. van Haren and H. van der Hoeven, “Conventional or Physicochemical Approach in Intensive Care Unit Patients with Metabolic Acidosis,” Critical Care, Vol. 7, 2003, pp. R41-R45. http://dx.doi.org/10.1186/cc2184
 A. Dubin, M. M. Menises, F. D. Masevicius, M. C. Mo seinco, D. O. Kutscherauer, E. Ventrice, E. Laffaire and E. Estenssoro, “Comparison of Three Different Methods of Evaluation of Metabolic Acid-Base Disorders,” Critical Care Medicine, Vol. 35, No. 5, 2007, pp. 1264-1270. http://dx.doi.org/10.1097/01.CCM.0000259536.11943.90
 D. A. Story, H. Morimatsu and R. Bellomo, “Strong Ions Weak Acids and Base Excess: A Simplified Fencl-Stew- art Approach to Clinical Acid-Base Disorders,” British Journal of Anaesthesia, Vol. 92, No. 1, 2004, pp. 54-60. http://dx.doi.org/10.1093/bja/aeh018
 V. Fencl, A. Jabor, A. Kazda, et al., “Diagnosis of Meta bolic Acid-Base Disturbances in Critically Ill Patients,” American Journal of Respiratory and Critical Care Me dicine, Vol. 162, No. 6, 2000, pp. 2246-2251. http://dx.doi.org/10.1164/ajrccm.162.6.9904099
 M. M. Boniatti, P. C. Cardoso, R. K. Castilho, S. R. Vieira, G. Friedman, S. P. Ribeiro and L. Fialkow, “Prog nostic Value of Unmeasured Anions in Critically Ill Patients,” Intensive Care Medicine, Suppl. 1, 2008, p. S24.