R. Smed-Hildmann

Does fossil plant material release humic substances into groundwater

Z. Filip, R. Smed-Hildmann, 1992 .

Microbial Activity in Sanitary Landfills–A Possible Source of the Humic Substances in Groundwater?

Z. Filip, R. Smed-Hildmann, 1988 .

Bdellovibrio sp. – A Predator under Groundwater Conditions? A Short Communication

Z. Filip, R. Smed-Hildmann, P. Schmelz, 1991 .