Matteucci, G., Dore, S., Stivanello, S., Rebmann, C., & Buchmann, N. (2000). Soil respiration in beech and spruce forests in Europe: Trends, controlling factors, annual budgets and implications for the ecosystem carbon balance. In E.-D., Schulze (Ed.), Carbon and Nitrogen Cycling in European Forest Ecosystems (pp. 217-236). Berlin: Springer.