Template:Kärnefelt et al., 1993

• Kärnefelt, I., Mattsson, J.-E. & Thell, A. 1993. The Lichen Genera Arctocetraria, Cetraria, and Cetrariella (Parmeliaceae) and Their Presumed Evolutionary Affinities. The Bryologist 96(3): 394–404. RLL List # 153 / Rec.# 9608 – Recent Literature on Lichens DOI: 10.2307/3243869  
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