1. Winge, Ö., and Laustsen, O., C.R. Lab. Carlsberg, Ser. Physiol., 22, 99 (1937). Lindegren, C. C., and Lindegren, G., Ann. Mo. Bot. Garden, 31, 203 (1944).
2. Subramaniam, M. K., Curr. Sci., 14, 234 (1945); Proc. Nat. Inst. Sci. India, 13, 129 (1947); Cellule, 54, 145 (1951a). Subramaniam, M. K., and Ranganathan, B., Proc. Nat. Inst. Sci. India, 14, 279 (1948). Ranganathan, B., J. Ind. Inst. Sci., 32 A, 91 (1950).
3. Duraiswami, S., and Subramaniam, M. K., Cellule, 53, 215 (1950). Subramaniam, M. K., J. Ind. Inst. Sci., 32 A, 29 (1950).
4. Ranganathan, B., and Subramaniam, M. K., Proc. Nat. Inst. Sci. India, 14, 389 (1948). Royan, S., and Subramaniam, M. K., Nature, 169, 932 (1952).
5. Subramaniam, M. K., Curr. Sci., 20, 257 (1951b).