RANDALL, P. J. Root Exudates in Phosphorus Acquisition by Plants. Plant Nutrient Acquisition, New Perspectives. 2001, 71-100
GADD, G. M. Fungal production of citric and oxalic acid : importance in metal speciation, physiology and biogeochemical processes. Advances in microbial physiology. 1999, 41, 47-92
FOMINA, M. Zinc phosphate and pyromorphite solubilization by soil plant-symbiotic fungi. Geomicrobiology Journal. 2004, 21, 351-366
JACQUELINE, A. S. Solubilization and transformation of inxoluble inorganic metal compounds to insoluble metal oxalates by Aspergillus niger. Mycol. Res. 1997, 101, 653-661