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Sato, S.; Watanabe, T.; Crawford, R. M.; Kooistra, W. H. C. F.; Medlin, L. K. (2008). Morphology of four plagiogrammacean diatoms; Dimeregramma minor var. nana, Neofragilaria nicobarica, Plagiogramma atomus and Psammogramma vigoensis gen. et sp. nov., and their phylogenetic relationship inferred from partial large subunit rDNA. Phycological Research. 56(4): 255-268.