1. Gates, R. R., NATURE, 140, 1013 (1937).
2. Semmens, C. S., and Bhaduri, P. N., "A New Method for Differential Staining of the Nucleolus", Stain Tech. (in the Press).
3. Bhaduri, P. N., "Root-tip Smear Technique and the Differential Staining of the Nucleolus", J. Roy. Micro. Soc. (in the Press).
4. J. Morph., 56, 157–179 (1934).