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Pavlov, A.; Nakov, T.; Levkov, Z.; Furey, P.; Lowe, R.; Ector, L. (2009). Luticola grupcei (Bacillariophyceae) - a new freshwater diatom from Mountain Baba (Macedonia) and Great Smoky Mountains National Park (U.S.A.): comparison with the type material of L. goeppertiana (Bleisch) D.G. Mann. Nova Hedwigia. 89(1): 147-164.