A.  Crespo, Kauff, F., Divakar, P. K., del Prado, R., Pérez-Ortega, S., Amo de Paz, G., Ferencova, Z., Blanco, O., Roca-Valiente, B., Núñez-Zapata, J., Cubas, P., Argüello, A., Elix, J. A., Esslinger, T. L., Hawksworth, D. L., Millanes, A. M., M. Molina, C., Wedin, M., Ahti, T., Aptroot, A., Barreno, E., Bungartz, F., Calvelo, S., Candan, M., Cole, M., Ertz, D., Goffinet, B., Lindblom, L., Lücking, R., Lutzoni, F., Mattsson, J. - E., Messuti, M. I., Miadlikowska, J., Piercey-Normore, M. D., Rico, V. J., Sipman, H. J. M., Schmitt, I., Spribille, T., Thell, A., Thor, G., Upreti, D., and Lumbsch, H. T., ?Phylogenetic generic classification of parmelioid lichens (Parmeliaceae, Ascomycota) based on molecular, morphological and chemical evidence?, Taxon, vol. 59, pp. 1735-1753, 2010.

A.  Thell, Tsurykau, A., Persson, P. - E., Hansson, M., Åsegård, E., Kärnefelt, I., and Seaward, M. R. D., ?Parmelia ernstiae, P. serrana and P. submontana, three species increasing in the Nordic countries?, Graphis Scripta, vol. 29, pp. 24-32, 2017.

A.  Thell, Feuerer, T., Kärnefelt, I., Myllys, L., and Stenroos, S., ?Monophyletic groups within the Parmeliaceae identified by ITS rDNA, ?-tubulin and GAPDH sequences?, Mycological Progress, vol. 3, pp. 297-314, 2004.

M. P.  Nelsen, Chavez, N., Sackett-Hermann, E., Thell, A., Randlane, T., Divakar, P. K., Rico, V. J., and Lumbsch, H. T., ?The cetrarioid core group revisited (Lecanorales: Parmeliaceae)?, Lichenologist, vol. 43, pp. 537-551, 2011.

S.  Stenroos, Hyvönen, J., Myllys, L., Thell, A., and Ahti, T., ?Phylogeny of the genus Cladonia s. lat. (Cladoniaceae, Ascomycetes) inferred from molecular, morphological, and chemical data?, Cladistics, vol. 18, pp. 237-278, 2002.

A.  Thell, Herber, B., Aptroot, A., Adler, M. T., Feuerer, T., and Kärnefelt, I., ?A preliminary phylogeographic study of Flavopunctelia and Punctelia inferred from rDNA ITS-sequences?, Folia Cryptogamica Estonica, vol. 41, pp. 115-122, 2005.

A.  Thell, Elix, J. A., Feuerer, T., Hansen, E. S., Kärnefelt, I., Schüler, N., and Westberg, M., ? Notes on the systematics, chemistry and distribution of European Parmelia and Punctelia species (lichenized ascomycetes)?, Sauteria, vol. 15, pp. 545-559, 2008.

J.  Miadlikowska, Kauff, F., Högnabba, F., Oliver, J. C., Molnar, K., Fraker, E., Gaya, E., Hafellner, J., Hofstetter, V., Gueidan, C., Otálora, M. A. G., Hodkinson, B., Kukwa, M., Lücking, R., Björk, C., Sipman, H. J. M., Burgaz, A. R., Thell, A., Passo, A., Myllys, L., Goward, T., Fernández-Brime, S., Hestmark, G., Lendemer, J., Lumbsch, H. T., Schmull, M., Schoch, C. L., Sérusiaux, E., Maddison, D. R., Arnold, A. E., Lutzoni, F., and Stenroos, S., ?A multigene phylogenetic synthesis for the class Lecanoromycetes (Ascomycota): 1307 fungi representing 1139 infrageneric taxa, 317 genera and 66 families?, Molecular Phylogenetics and Evolution, vol. 79, pp. 132-168, 2014.

L.  Myllys, Stenroos, S., Thell, A., and Ahti, T., ?Phylogeny of bipolar Cladonia arbuscula and Cladonia mitis (Lecanorales, Euascomycetes)?, Molecular Phylogenetics and Evolution, vol. 27, pp. 58-69, 2003.

S.  Stenroos, Hyvönen, J., Myllys, L., Thell, A., and Ahti, T., ?Phylogeny of the genus Cladonia s.lat. (Cladoniaceae, Ascomycetes) inferred from molecular, morphological, and chemical data?, Cladistics, vol. 18, pp. 237-278, 2002.

A.  Thell, Feuerer, T., Kärnefelt, I., Myllys, L., and Stenroos, S., ?Monophyletic groups within the Parmeliaceae identified by ITS rDNA, ?-tubulin and GAPDH sequences?, Mycological Progress, vol. 3, pp. 297-314, 2004.