D.  Ertz, Tehler, A., Irestedt, M., Frisch, A., Thor, G., and van den Boom, P., ?A large-scale phylogenetic revision of Roccellaceae (Arthoniales) reveals eight new genera?, Fungal Diversity, vol. 70, pp. 31-53, 2015.

P.  van den Boom, ?A new isidiate species of Catillaria from the Netherlands?, Lichenologist, vol. 34, pp. 321-325, 2002.

P.  Diederich and van den Boom, P., ?Two new lichenicolous species of Hainesia (asexual Ascomycetes) growing on Cladonia?, Bulletin de la Société des naturalistes luxembourgeois, vol. 114, pp. 59-63, 2013.

M.  Eichler, Cezanne, R., Diederich, P., Ertz, D., van den Broeck, D., van den Boom, P., and Sérusiaux, E., ?New or interesting lichens and lichenicolous fungi from Belgium, Luxembourg and northern France. XIII?, Bulletin de la Société des naturalistes luxembourgeois, vol. 111, pp. 33-46, 2010.

D.  Ertz, Diederich, P., Brand, A. M., van den Boom, P., and Sérusiaux, E., ?New or interesting lichens and lichenicolous fungi from Belgium, Luxembourg and northern France. XI.?, Bulletin de la Société des Naturalistes de Luxembourg, vol. 109, pp. 35-51, 2008.

P.  van den Boom and Etayo, J., ?Two new sorediate species of lichens in the Catillariaceae from the Iberian Peninsula?, Lichenologist, vol. 33, pp. 103-110, 2001.

P.  van den Boom, van den Boom, B., and Yazici, K., ?Catillaria fungoides found in Cape Verde, The Netherlands and Turkey, with notes on accompanying species?, Österreichische Zeitschrift für Pilzkunde, vol. 16, pp. 1-3, 2007.

P.  van den Boom and Brand, M., ?Verrucaria squamulosa, a new species from Belgium, Luxemburg and the Netherlands (lichenized ascomycetes, Verrucariales).?, Linzer Biologisches Beiträge, vol. 35, pp. 547-553, 2003.

E.  Sérusiaux, Diederich, P., Brand, A. M., and van den Boom, P., ?New or interesting lichens and lichenicolous fungi from Belgium and Luxembourg. VIII?, Lejeunia n.s., vol. 162, pp. 1-95, 1999.

J. D.  Lawrey, Diederich, P., Nelsen, M. P., Sikaroodi, M., Gillevet, P. M., Brand, A. M., and van den Boom, P., ?The obligately lichenicolous genus Lichenoconium represents a novel lineage in the Dothideomycetes?, Fungal Biology, vol. 115, pp. 176 - 187, 2011.