1. Adar E, Long A (1987) Oxygen-18 and deuterium distribution in rainfall, runoff and groundwater in a small semi-arid basin: the Aravaipa Valley in the Sonora Desert, Arizona. In: Proceedings of an International Symposium on the Use of Isotope Techniques in Water Resources Development. IAEA, Vienna, pp 257?273
2. Beatley JC (1974) Phenological events and their environmental triggers in Mojave Desert ecosystems. Ecology 55:856?863
3. Benson L, Klieforth H (1989) Stable isotopes in precipitation and ground water in the Yucca Mountain region, Southern Nevada: paleoclimatic implications. In: Peterson DH (ed) Aspects of Climate Variability in the Pacific and the Western Americas. American Geophysical Union, Washington DC, pp 41?59
4. Caldwell MM (1985) Cold desert. In: Mooney HA, Chabot BF (eds) Physiological Ecology of North American Plant Communities, Chapman and Hall, New York London, pp 198?212
5. Cannon WA (1911) The root habits of desert plants. In: Carnegie Institution of Washington Yearbook, vol 131, Carnegie Institution of Washington, Washington DC, pp 1?96