Cohen, AN et al. 2005. The invasive colonial ascidian Didemnum sp.: current distribution, basic biology, and potential threat to marine communities of the northeast and west coasts of the United States. J. of Experimental Marine Biology and Ecology.

Cohen, AN et al. 2007. The colonial ascidian Didemnum sp. A: Current distribution, basic biology, and potential threat to marine communities of the northeast and west coasts of North America. Journal of Experimental Marine Biology and Ecology, 99-108.

Cohen, AN et al. 2005. The invasive colonial ascidian Didemnum sp.: current distribution, basic biology, and potential threat to marine communities of the northeast and west coasts of the United States. J. of Experimental Marine Biology and Ecology.

Cohen, AN et al. 2007. The colonial ascidian Didemnum sp. A: Current distribution, basic biology, and potential threat to marine communities of the northeast and west coasts of North America. Journal of Experimental Marine Biology and Ecology, 99-108.