- Abdul-baki, A.A. and Anderson, J.D., 1973. Vigor determination in soybean seed by multiplication. Crop Sci., 3: 630-633.
- Chhetri, D.R., Rai, A.S. and Bhattacharjee, A., 1993. Chemical manipulation of seed longevity of four crop species in an unfavorable storage environment. Seed Sci. and Technol. 21: 31-44.
- International Seed Testing Association, 1985. Internatinal Rules for Seed Testing. Annexes. Seed Sci. and Technol. 13: 365-513.
- Maguire, J.D., 1962. Speed of germination in selection and evaluation for seedling vigor. Crop Sci. 2: 176-177.