Template:Staiger & Kalb, 1999
- Staiger, B. & Kalb, K. 1999. Acanthothecis and other graphidioid lichens with warty periphysoids or paraphysis-tips. Mycotaxon: An International Journal of Research on Taxonomy & Nomenclature of Fungi, including Lichens 73: 69–134. Cyberliber