1. Bennett, O. L., Scarsbrook, C. E., Doss, B. D. & Pearson, R. W. (1960) Interrelations of nitrogen fertilization and irrigation of cotton.Trans. 7th Int. Congr. Soil Sci. 1(6 657?662.
2. Gutstein, Y. (1966) The influence of regional growing conditions on yield and quality characteristics of some cotton varieties (1951?1958). Prelim. Rep. Nat. Univ. Inst. Agric., Rehovot. No. 533. (Hebrew with english summary).
3. Hamilton, J., Stanberry, C. O. & Wooton, W. H. (1956) Cotton growth and production as affected by moisture, nitrogen, and plant spacing on the Yuma Mesa.Proc. Soil Sci. Soc. Am. 20 246?252.
4. Hesketh, J. D. & Low, A. (1968) Effect of temperature on components of yield and fiber quality of cotton varieties of diverse origin.Cott. Gr. Rev. 45 243?257.
5. McKenzie, A. J. & van Schaik, P. H. (1963) Effect of nitrogen on yield, boll and fiber properties of four varieties of irrigated cotton.Agron. J. 55 345?347.