1. W.L. Beaver, K. Wasserman, B.J. Whipp, On-line computer analysis and breath-by-breath graphical display of exercise function tests, J. Appl. Physiol. 23: 128–132, 1973.
2. G.P. Herr, S.F. Sullivan, H.J. Khambatta, R. Crane, On-line acquisition of pulmonary gas exchange data, IEEE Trans. Biomed. Engineering, BME 25: 83–88, 1978.
3. D. Linnarsson, B. Lindborg, Breath-by-breath measurement of respiratory gas exchange using on-line analog computation, Scand, J. Clin. Lab. Invest. 34: 219–224, 1974.
4. G. Lister, Jr., J.I.E. Hoffman, A.M. Rudolph, Measurement of oxygen consumption: assessing the accuracy of a method, J. Appl. Physiol. Environ. Exercise Physiol., 43: 916–917, 1977.
5. A.C. Norton, V. Mashikian, J.H. Wilmore, C.D. Rader, Development and evaluation of a metabolic measurement cart, Proc. S. Diego Biomed. Symp., 15: 139–145, 1976.