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Løfall, Bjørn Petter; Timdal, Einar (2002). "Cladonia krogiana, a new xanthone-containing species from Norway". The Lichenologist. 34 (4): 277–281. Bibcode:2002ThLic..34..277L. doi:10.1006/lich.2002.0402.
Charnei, A.M.; Eliasaro, S.; Gumboski, E.L. (2015). "Three new species of Cladonia (Cladoniaceae, Ascomycota) from Southern Brazil". Annals of the Brazilian Academy of Sciences. 87 (1): 101–108. doi:10.1590/0001-3765201520130450. PMID25789793.