Hartmann, R., Schneider, B. U., Gast, C., Keplin, B., Hüttl, R. F. J. (1999): Effects of N-enriched rock powder on soil chemistry, organic matter formation and plant nutrition in lignite-poor sandy mine spoil in the forest reclamation practice. - Plant and Soil, 213, 1-2, 99-115.https://doi.org/10.1023/A:1004638203867