1. Addicott FT, Cams HR (1983) In: Addicott FT (ed) Abscisic acid. Praeger, New York, pp 1–21.
2. Ahmad MR, Saxena PN, Amla DV et al. (1978) Beitr Biol Pflanz 54:33–40.
3. Al-Nimri LF, Coolbaugh RC (1990a) J Plant Growth Regul 9:221–226.
4. Al-Nimri LF, Coolbaugh RC (1990b) J Plant Growth Regul 10:63–66.
5. Al-Nimri IF, Coolbaugh RC (1991) Plant Physiol (Suppl) 93:71.