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Yana, E.; Nakkaew, S.; Pekkoh, J.; Peerapornpisal, Y.; Tuji, A.; Davis, M. P.; Julius, M. L.; Mayama, S. (2022). Valve and 'Stigma' Structure and Phylogeny of an Enigmatic Cymbelloid Diatom Karthickia verestigmata Glushchenko, Kulikovskiy & Kociolek. Diatom Research. 37(3): 293-305.