He was editor in chief of the World Porifera Database (WPD) from 2004 to 2021, and is currently (March 2022) one of its taxonomic editors.
He has contributed to the systematics, the phylogeny and the taxonomy of sponges, to their chemistry and biological properties (and the pharmacological use thereof)
↑Chambers, Susan (September 2003). "Systema porifera. A guide to the classification of sponges, edited by J.N.A. Hooper and R.W.M. van Soest. Kluwer Academic/Plenum Publishers, Dordrecht, 2002, 1756pp. ISBN 0-306-47260-0". Aquatic Conservation: Marine and Freshwater Ecosystems. 13 (5): 461–462. Bibcode:2003ACMFE..13..461C. doi:10.1002/aqc.593.
↑Sadar, Marianne; David E Williams; Nasrin R Mawji; etal. (2008). "Sintokamides A to E, chlorinated peptides from the sponge Dysidea sp. that inhibit transactivation of the N-terminus of the androgen receptor in prostate cancer cells". Organic Letters. 10 (21): 4947–4950. doi:10.1021/ol802021w. PMID18834139. WikidataQ33373804.{{Cite Q}}: Missing first/last names in Wikidata for David E Williams, Nasrin R Mawji (help)
↑Linington, Roger; Marilyn Robertson; Annick Gauthier; B Brett Finlay; MacMillan, John; Molinski, Tadeusz; van Soest, Robertus Wilhelmus Maria; Raymond J Andersen (2006). "Caminosides B-D, antimicrobial glycolipids isolated from the marine sponge Caminus sphaeroconia". Journal of Natural Products. 69 (2): 173–177. doi:10.1021/np050192h. PMID16499312. WikidataQ82653366.{{Cite Q}}: Missing first/last names in Wikidata for Marilyn Robertson, Annick Gauthier, B Brett Finlay, Raymond J Andersen (help)
↑Florence Lefranc; Genoveffa Nuzzo; Nehal Aly Hamdy; etal. (2013). "In vitro pharmacological and toxicological effects of norterpene peroxides isolated from the Red Sea sponge Diacarnus erythraeanus on normal and cancer cells". Journal of Natural Products. 76 (9): 1541–1547. doi:10.1021/np400107t. PMID23977995. WikidataQ50487016.{{Cite Q}}: Missing first/last names in Wikidata for Florence Lefranc, Genoveffa Nuzzo, Nehal Aly Hamdy (help)