1. The immobilization of bacterial phosphorus in constructed wetlands;Alas,2003
2. Post-installation solutions for phosphorus reduction in cold climate treatment wetlands;Anderson,2000
3. Standard methods for the examination of water and waste water;APHA,1989
4. Accordance of Estonian oil shale based CFBC boilers to environmental safety requirements;Arro,1999
5. Reciprocating constructed wetlands for treating industrial, municipal and agricultural wastewater;Behrends,2000