Reference
N. Eguchi, R. Funada, T. Ueda, K. Takagi, T. Hiura, K. Sasa, Takayoshi Koike (2005): Soil Moisture Condition and Growth od Dediduous Tree Seedlings Native to Nothern Japan Grown under Elevated CO2 with a FACE System. – Phyton, Annales Rei Botanicae, Horn – 45_4: 133 - 138.