B.  Benfield, Orange, A., and James, P. W., ?Graphis?, in Lichens of Great Britain and Ireland, London: British Lichen Society, 2009, pp. 415-417.

B.  Benfield, Coppins, B. J., and James, P. W., ?Phaeographis?, in Lichens of Great Britain and Ireland, London: British Lichen Society, 2009, pp. 691-693.

E.  Rivas Plata, Parnmen, S., Staiger, B., Mangold, A., Frisch, A., Weerakoon, G., Hernandez, J., Caceres, M., Kalb, K., Sipman, H., Common, R., Nelsen, M., Luecking, R., and Lumbsch, T., ?A molecular phylogeny of Graphidaceae (Ascomycota, Lecanoromycetes, Ostropales) including 428 species?, MycoKeys, vol. 6, pp. 55-94, 2013.

A.  Pentecost, ?Seasonality of ascospore production in two lirellate lichens: Alyxoria (Opegrapha) varia and Phaeographis dendritica?, British Lichen Society Bulletin, vol. 117, pp. 7-14, 2015.

A.  Pentecost, ?Growth and development of ascomata in two members of the British Graphidaceae (lichenized Ascomycota; Ostropales)?, Lichenologist, vol. 48, pp. 249-254, 2016.

Z.  Lepista and Aptroot, A., ?Seven species of Graphis from Portugal reported new to Europe?, Lichenologist, vol. 48, pp. 259-267, 2016.