1. Mosvondsten in Nederland;Agsteribbe;Nederlands Kruidkundig Archief,1950
2. Some ecological statistics of a ‘miniature bog’;Bellamy;Oikos,1967
3. The role of water balance studies in environmental planning;Beltman,1984
4. Distribution of fen plant communities in relation to the hydrochemical characteristics in the Vechtplassen area, The Netherlands;Beltman,1988
5. The role of bryophytes in the calcareous fens of the Oxford District;Clapham;J. Ecol.,1940