Wirth, Christian Interdepartmental Max Planck Fellow Group Functional Biogeography, Max Planck Institute for Biogeochemistry, Max Planck Society;
http://dx.doi.org/10.1093/jpe/rtt065 (Publisher version)
Proulx, R., Roca, I. T., Cuadra, F. S., Seiferling, I., & Wirth, C. (2014). A novel photographic approach for monitoring the structural heterogeneity and diversity of grassland ecosystems. Journal of Plant Ecology, 7(6), 518-525. doi:10.1093/jpe/rtt065.