Florin, T.H.J., Neale, G., Gibson, G. ORCID: https://orcid.org/0000-0002-0566-0476, Christl, S.U. and Cummings, J.H. (1991) Metabolism of dietary sulphate: absorption and excretion in humans. Gut (32). pp. 766-773.

Gibson, G. ORCID: https://orcid.org/0000-0002-0566-0476, Cummings, J.H. and Macfarlane, G.T. (1991) Growth and activities of sulphate-reducing bacteria in gut contents from healthy subjects and patients with ulcerative colitis. FEMS Microbiology Ecology (86). pp. 103-112.

Gibson, G. ORCID: https://orcid.org/0000-0002-0566-0476, Macfarlane, S. and Cummings, J.H. (1991) Comparison of the fermentability of polysaccharides by mixed human faecal bacteria in relation to their suitability as bulk forming laxatives. Letters in Applied Microbiology (11). pp. 251-254.

Macfarlane, G.T. and Gibson, G. ORCID: https://orcid.org/0000-0002-0566-0476 (1991) Co-utilization of polymerized carbon sources by Bacteroides ovatus grown in a 2-stage continuous culture system. Applied and Environmental Microbiology (57). pp. 1-6.

Macfarlane, G.T. and Gibson, G. ORCID: https://orcid.org/0000-0002-0566-0476 (1991) Sulphate-reducing bacteria. In: Levett, P.N. (ed.) Anaerobic Microbiology - A Practical Approach. Oxford University Press, Oxford, pp. 201-221.

Macfarlane, G.T. and Gibson, G. R. ORCID: https://orcid.org/0000-0002-0566-0476 (1991) Formation of glycoprotein degrading enzymes by Bacteroides fragilis. FEMS Microbiology Letters (77). pp. 289-294.

Macfarlane, G.T., Gibson, G. R. ORCID: https://orcid.org/0000-0002-0566-0476 and Cummings, J.H. (1991) Extracellular and cell-associated glycosidase activities in different regions of the human large intestine. Letters in Applied Microbiology (12). pp. 3-7.