@Article{soil-5-15-2019,
AUTHOR = {Oldfield, E. E. and Bradford, M. A. and Wood, S. A.},
TITLE = {Global meta-analysis of the relationship between soil organic matter and
crop yields},
JOURNAL = {SOIL},
VOLUME = {5},
YEAR = {2019},
NUMBER = {1},
PAGES = {15--32},
URL = {https://soil.copernicus.org/articles/5/15/2019/},
DOI = {10.5194/soil-5-15-2019}
}