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Wolff, E. W. and Moore, JC and Clausen, HB and Hammer, CU (1997) Climatic implications of background acidity and other chemistry derived from electrical studies of the Greenland Ice Core Project ice core. Journal of Geophysical Research: Oceans, 102. pp. 26325-26332. ISSN 2169-9291 DOI 10.1029/96JC02223
Butterfield, N. J. (1997) Plankton ecology and the Proterozoic-Phanerozoic transition. Paleobiology, 23. pp. 247-262. ISSN ISSN: 0094-8373
Harland, W. B. and Anderson, L. M. and Manasrah, D. and Butterfield, N. J. and Challinor, A. and Doubleday, P. A. and Dowdeswell, E. K. and Dowdeswell, J. A. and Geddes, I. and Kelly, S. R. A. and Lesk, E. L. and Spencer, A. M. and Stephens, C. F. (1997) The geology of Svalbard. Memoirs of the Geological Society of London . Geological Society, London, xviii, 521.