| The marine flora: an indicator of change in the North Sea |
| Ducrotoy, J.-P. (1998). The marine flora: an indicator of change in the North Sea, in: Scott, G.W. et al. (Ed.) (1998). Changes in the marine flora of the North Sea. pp. 11-27 |
| In: Scott, G.W.; Tittley, I. (Ed.) (1998). Changes in the marine flora of the North Sea Centre for European Research into Coastal Issues (CERCI): Scarborough. ISBN 0-9534857-0-6. 168 pp., meer |
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