1. Borthwick, H. A. (1966). Letter to S. C. Bhargava in New Delhi, September 28. Unpublished.
2. The high-energy light action controlling plant responses and development;Borthwick;Proc. Natl. Acad. Sci. USA,1969
3. Chromophores of allophycocyanin and R-phycocyanin;Chapman;Biochem. J.,1967
4. Structure of phycocyanobilin;Crespi;J. Am. Chem. Soc.,1967
5. Photocontrol of anthocyanin synthesis in dark-grown milo seedlings;Downs;Plant Physiol,1961