2011, Article in monograph or in proceedings (Wisdom, R.; Vohla, C. (ed.), After Wise Use – The Future of Peatlands, Proceedings of the 13th International Peat Congress: Pristine Mire Landscapes, pp. 92-94)
2008, Article in monograph or in proceedings (After wise use : the future of peatlands : Proceedings of the 13th International Peat Congress Pristine Mire Landscapes, pp. 92-94)