Classification of ecological status of lakes and riversSaara Bäck, Krister Karttunen, Nordic Council of Ministers · First published 2001Open the Tome
Monitoring and assessment of ecological status of aquatic environmentsKrister Karttunen, Nordic Council of Ministers, Monitoring and Assessment of Ecological Status of Aquatic Environments, Implementing the Water Framework Directive (2000 Siikaranta, Finland) · First published 2001Open the Tome
Suomen vesisammalkasvioTimo Koponen, Krister Karttunen, Sinikka Piippo, Suomen Sammalseura · First published 1995Open the Tome
