1. Fungal attacks to root systems and crowns of declining Fraxinus excelsior. Proc. from the SNS meeting in Forest Pathology at Skogbrukets Kursinstitutt, Biri Norway, 28-31. Aug. 2005;Bakys;Akt. fra Skogforskningen,2005
2. Recent disease problems in Swedish forests. Proc. from the SNS meeting in Forest Pathology at Skogbrukets Kursinstitutt, Biri Norway, 28-31. Aug. 2005;Barklund;Akt. fra Skogforskningen,2005
3. Auffallende Schadfaktoren an Waldbäumen im Jahr 2005;Cech;Forstschutz Akt,2006
4. About ash decline (in Polish);Kowalski;Trybuna Leśnika,2001