1. Bhadresa, R., 1977. Food preferences of rabbits Oryctolagus cuniculus L. at Holkham sand dunes, Norfolk. J. Appl. Ecol. 14: 287?291.
2. Blom, C. W. P. M. & Willems, R. J. B. M., 1971. De Westduinen op Goeree. Levende Natuur 74: 219?225.
3. Boorman, L. A., 1974. Experiments in East Anglia. In: D. S. Ranwell (ed.), Sand Dune Machair. Institute of Terrestrial Ecology, Norwich.
4. Boorman, L. A., 1977. Sand-dunes. In: R. S. K. Barnes (ed.), The Coastline, John Wiley Ltd., Chichester.
5. Duffey, E., Morris, M. G., Sheail, J., Ward, L. K., Wells, D. A. & Wells, T. C. E., 1974. Grassland Ecology and Wildlife. Chapman & Hall, London.