1. Aliero BL. 2004. Effects of sulfuric acid, mechanical scarification and wet heat treatments on germination of seeds of African locust bean tree, Parkia biglobosa. African Journal of Biotechnology, 3(3): 179–181.
2. Al-mudaris MA, Omari MA, Hattar BI. 1999. Enhancing germination of four Australian Acacia species through seed treatments overcoming coat-imposed dormancy. Journal of Agriculture in the Tropics and Subtropics, 100(2): 147–156.
3. Anderson DC, Ostler WK. 2002. Revegetation of degraded lands at U.S. Department of Energy and U.S. department of Defence installation: strategies and successes. Arid Land Research and Management, 16(3): 197–212.
4. Aref IMI. 1996. The Distribution and Ecophysiology of Acacia Species in the South Western Zone of Saudi Arabia. A Ph.D. Thesis, UK: University of Edinburgh, p. 273.
5. Aref IMI. 2000. Effects of pre-germination treatments and sowing depths upon germination potential of some Acacia species. Research Bulletin, 95: 5–17.