1. McDowell, N. G. (2011). Mechanisms linking drought, hydraulics, carbon metabolism, and vegetation mortality. Plant physiology, 155(3), 1051-1059.
http://www.plantphysiol.org/content/155/3/1051
2. Sevanto, S. (2014). Phloem transport and drought. Journal of experimental botany, 65(7), 1751-1..