1. A newly discovered population of the critically endangered false limpet Siphonaria compressa Allanson, 1958 (Pulmonaria: Siphonariidae), with observations on its reproductive biology;Allanson;South African Journal of Science,2005
2. The natural history of Siphonaria compressa (Siphonariidae: Pulmonata). Part 2: Development and growth;Allanson;Invertebrate Reproduction & Development,2010
3. Benthic macrofaunal richness and diversity in the Knysna Estuary: a 50 year comparison;Allanson;Transactions of the Royal Society of South Africa,2000
4. Causes of rarity and range restriction of an endangered, endemic limpet, Siphonaria compressa;Angel;Journal of Experimental Marine Biology & Ecology,2006