@article{014535868,
title = "Investigations on the availability of phosphorus in soil receiving long-term phosphate fertilizing. 2. Availability of alteration products with defective apatite structure in neutral and calcareous soils",
author = "Werner, W.",
year = "1971",
journal = "Zeitschrift fur Pflanzenernahrung und Bodenkunde",
volume = "129",
number = "1",
pages = "30-42",
url = "https://eurekamag.com/research/014/535/014535868.php"
}