Gouws, G., Stewart, B. A. and Coke, M. 2000. Evidence for a new species of river crab (Decapoda: Potamonautidae) from the Drakensberg, South Africa. Journal of Crustacean Biology 20: 743-758.
Gouws, G. and Stewart, B. A. 2001. Potamonautid river crabs (Decapoda, Potamonautidae) of KwaZulu-Natal. Water SA 27: 85-98.
Gouws, G., Stewart, B. A. and Reavell, P. E. 2001. A new species of freshwater crab (Decapoda, Potamonautidae) from the swamp forests of KwaZulu-Natal, South Africa: biochemical and morphological evidence. Crustaceana 74: 137-160.
Gouws, G., Daniels, S. R. and Stewart, B. A. 2002. Allozyme electrophoresis demonstrates the presence of a species boundary in freshwater crabs (Decapoda: Potamonautidae). Journal of Natural History 36: 1199-1222.
Daniels, S. R., Stewart, B. A., Gouws, G., Cunningham, M. J. and Matthee, C. A. 2002. Phylogenetic relationships of the southern African freshwater crab fauna (Decapoda: Potamonautidae: Potamonautes) derived from multiple data sets reveal biogeographic patterning. Molecular Phylogenetics and Evolution 25: 511-523.
Daniels, S. R., Gouws, G., Stewart, B. A. and Coke, M. 2003. Molecular and morphological data demonstrate the presence of cryptic lineages among freshwater crabs (Decapoda: Potamonautidae: Potamonautes) from the Drakensberg Mountains, South Africa. Biological Journal of the Linnean Society 78: 129-147.
Stewart, B. A., Gouws, G., Daniels, S. R. and Matthee, C. A. 2004. Delimitation of morphologically similar sponge crab species of the genus Pseudodromia (Crustacea, Decapoda, Dromiidae) from South Africa. Zoologica Scripta 33: 45-55.
Gouws, G., Stewart, B. A and Daniels, S. R. 2004. Cryptic species within the freshwater isopod Mesamphisopus capensis (Phreatoicidea: Amphisopodidae) in the Western Cape, South Africa: allozyme and 12S rRNA sequence data and morphometric evidence. Biological Journal of the Linnean Society 81: 235-253.
Gouws, G., Stewart, B. A. and Matthee, C. A. 2005. Lack of taxonomic differentiation within an apparently widespread freshwater isopod morphotype (Phreatoicidea: Mesamphisopidae: Mesamphisopus) from South Africa. Molecular Phylogenetics and Evolution 37: 289-305.
Daniels, S. R., Gouws, G. and Crandall, K. A. 2006. Phylogeographic patterning in a freshwater crab species (Decapoda: Potamonautidae: Potamonautes) reveals the signature of historical climatic oscillations. Journal of Biogeography 33: 1538-1549.
Gouws, G., Stewart, B. A. and Daniels, S. R. 2006. Phylogeographic structure of a freshwater crayfish (Decapoda: Parastacidae: Cherax preissii) in Western Australia. Marine and Freshwater Research 57: 837-848.
Gouws, G. and Stewart, B. A. 2007. From genetic structure to wetland conservation: a freshwater isopod Paramphisopus palustris (Phreatoicidea: Amphisopidae) from the Swan Coastal Plain, Western Australia. Hydrobiologia 589: 249-263.
Close, P. G. and Gouws, G. 2007. Cryptic estuarine gobiid fish larvae (Pisces: Gobiidae) identified as Pseudogobius olorum using allozyme markers. Journal of Fish Biology 71 (Suppl. B): 288-293.
Gouws, G. 2008. New species within the endemic South African isopod genus Mesamphisopus (Isopoda: Phreatoicidea: Mesamphisopidae). Zootaxa 1690: 1-62.
Gouws, G., Matthee, C. A. and Stewart, B. A. 2010. A multiple data set phylogeny for the endemic South African freshwater phreatoicidean isopod genus Mesamphisopus: taxonomic and biogeographic implications. Molecular Phylogenetics and Evolution 55: 541-551.
Gouws, G., Daniels, S. R. and Stewart, B. A. In press. Phylogeographic structure in the gilgie (Decapoda: Parastacidae: Cherax quinquecarinatus) - a south-western Australian freshwater crayfish. Biological Journal of the Linnean Society.