M. Vassileva (2018). SUSTAINABLE CROP PRODUCTION: P-SOLUBILIZING BIOFERTILIZERS. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Nano, Bio and Green - Technologies for a Sustainable Future, 653-660. https://doi.org/10.5593/sgem2018/6.2/s25.086