1. R. J. Johnson and D. E. Metzler, this series, Vol. 22, p. 3; N. E. Good and S. Izawa, Vol. 24, p. 53.
2. Hydrogen Ion Buffers for Biological Research*
3. Hydrogen ion buffers for biological research
4. Buffers for pH and Metal Ion Control;Perrin,1974
5. J. S. Blanchard, this series, Vol. 104, p. 404.