Kodymová, J. “TESTING THE IMPACT OF WASTE FROM ANAEROBIC DIGESTION (ENRICHED WITH AN ORGANIC COMPONENT ON THE QUALITY OF AGRICULTURAL LAND)”. GeoScience Engineering, vol. 63, no. 4, Jan. 2018, pp. 33-38, http://geoscience.cz/ojs/index.php/GSE/article/view/162.