FIALA, Josef. The influence of modified pratotechnics of unmanaged grasslands on the amount of mineral nitrogen in lysimetric waters of the rhizosphere. In Plant, soil and environment. ISSN 1214-1178, 2006, roč. 52, č. 2, s. 83-87. Dostupné na internete:<http://www.cazv.cz/attachments/PSE_52_83-87.pdf>