References
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- Holmes W. C., Peterson A. R. The analysis of neutral red and of the pyronins. Stain Techn. 1930; 5: 91–6
- Transmission spectra of dyes in the solid state. J. Phys. Chem. 1932; 36: 1248–54
- Peterson A. R., Holmes W. C. Certain correlations between the constitution of dyes and their color intensity. J. Phys. Chem. 1932; 36: 633–41
- Stotz E., Conn H. J., Knapp F., Emery A. J. Spectrophotometric characteristics and assay of biological stains. Stain Techn. 1950; 25: 57–68