Sierra, Carlos A. Quantitative Ecosystem Ecology, Dr. C. Sierra, Department Biogeochemical Processes, Prof. S. E. Trumbore, Max Planck Institute for Biogeochemistry, Max Planck Society;
Crow, S. E., Reeves, M., Schubert, O. S., & Sierra, C. A. (2015). Optimization of method to quantify soil organic matter dynamics and carbon sequestration potential in volcanic ash soils. Biogeochemistry, 123, 27-47. doi:10.1007/s10533-014-0051-6.