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Rigby, S (2003) 'The functional morphology and population structure of Rastrites maximus from the Southern Uplands.' Scottish Journal of Geology, 39 (1). pp. 51-60.
Stone, P, Rigby, S and Floyd, J.D (2003) 'Advances in Scottish graptolite biostratigraphy: an introduction.' Scottish Journal of Geology, 39 (1). pp. 11-15.