1998

Mitchell, S. and Underwood, Charlie J. (1998) Discussion of 'isotopic variation in fossils and matrix of the Cretaceous Red Chalk at Speeton and South Ferriby, Yorkshire, England'. Proceedings of the Yorkshire Geological Society 52 (1), pp. 107-112. ISSN 0044-0604.

1999

Underwood, Charlie J. and Mitchell, S. (1999) Mid-Cretaceous onlap history of the Market Weighton structural high, northeast England. Geological Magazine 136 (6), pp. 681-696. ISSN 0016-7568.