@article{bbfee12e2c9740048f7c997955e4ae95,
title = "Relationship between availability indices and plant uptake of nitrogen and phosphorus from organic products.",
keywords = "Iron oxide coated paper, Organic products, Pepsin extraction, Plant-available N, Plant-available P, Thermal fractionation",
author = "G.L. Velthof and {van Beusichem}, M.L. and W.M.F. Raijmakers and B.H. Janssen",
year = "1998",
doi = "10.1023/A:1004336903214",
language = "English",
volume = "200",
pages = "215--226",
journal = "Plant and Soil",
issn = "0032-079X",
publisher = "Springer",
}