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Bresinsky A; Jarosch M; Fischer M; Schönberger I; Wittmann-Bresinsky B (1999). "Phylogenetic relationships within Paxillus s. l. (Basidiomycetes, Boletales): Separation of a Southern Hemisphere genus". Plant Biology. 1 (3): 327–33. doi:10.1111/j.1438-8677.1999.tb00260.x. ISSN1435-8603.