Jeltsch, F., Lefever, R., Turnbull, L., Scarsoglio, S., Alados, C. L., Rallart, F., Mueller, E. N., Millington, J., Wainwright, J., Wierzoerek, M., & Grimm, V. (2013). Resilience, self-organization, complexity and pattern formation. In Patterns of Land Degradation in Drylands: Understanding Self-Organised Ecogeomorphic Systems. Springer Verlag