Reference

Gerhard Wieser, K. Hecke, Michael Tausz, K.- H. Häberle, T. E. E. Grams, Rainer Matyssek (2002): The Role of Antioxidative Defense in Determining Ozone Sensitivity of Norway Spruce (Picea abies (L.) KARST.) Across Tree Age: Implications for the Sun- and Shade Crown. – Phyton, Annales Rei Botanicae, Horn – 42_3: 244 - 253.