| Changes in the macroalgal flora on reefs in Danish waters |
| Nielsen, R. (1998). Changes in the macroalgal flora on reefs in Danish waters, in: Scott, G.W. et al. (Ed.) (1998). Changes in the marine flora of the North Sea. pp. 89-98 |
| 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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