1. Ahmed, Ch. M. S. & G. R. Sagar, 1981. Effects of a mixture of NAA+BA on tuber number and growth rates of tubers ofSolanum tuberosum L.Potato Res. 24: 267–278.
2. Artschwager, E. F., 1918. Anatomy of the potato plant with special reference to the ontogeny of the vascular system.J. agric. Res. 14: 221–252.
3. Borah, M. N. & F. L. Milthorpe, 1962. Growth of the potato as influenced by temperature.Indian J. Pl. Physiol. 5: 53–72.
4. Burt, R. L., 1961. Some effects of temperature on the growth and development of the potato. Ph.D. thesis, University of Nottingham.
5. Clark, C. F., 1921. Development of tubers in the potato.Bull. U.S. Dept. Agric. No. 958.