D.235-D.240: Chapter for a proposed book The Cephalosporin Antibiotics. The title of Abraham's chapter was 'Cephalosporins 1945-1985'. The publishers, Adis Press Ltd. (New Zealand), eventually abandoned publication of the book. The material was published instead in a special supplement to Adis Press's international supplement Drugs, 1987.

D.241: 'Purification and Initial Characterization of an Enzyme with Deacetoxycephalosporin C Synthetase and Hydroxylase Activities', with Jack E. Baldwin et al., Biochemical Journal 245, 1987.

D.242-D.245: 'Factors Affecting the Isopenicillin N Synthetase Reaction', with D. Perry and J.E. Baldwin, Biochemical Journal 255, 1988.

D.246: 'Acyl Coenzyme A: 6-aminopenicillinanic Acid Acyltransferase from Penicillium chrysogenum and Aspergillus nidulans, with P.A Whiteman et al., FEBS Letters 262, 1990.