Krog, Hildur (1982). "Punctelia, a new lichen genus in the Parmeliaceae". Nordic Journal of Botany. 2 (3): 287–292. doi:10.1111/j.1756-1051.1982.tb01191.x.
Chaparro, Marcos A.E.; Lavornia, Juan M.; Chaparro, Mauro A.E.; Sinito, Ana M. (2013). "Biomonitors of urban air pollution: Magnetic studies and SEM observations of corticolous foliose and microfoliose lichens and their suitability for magnetic monitoring". Environmental Pollution. 172: 61–69. doi:10.1016/j.envpol.2012.08.006. hdl:11336/6969. PMID22982554.
Chaparro, Marcos A.E.; Lavornia, Juan M.; Chaparro, Mauro A.E.; Sinito, Ana M. (2013). "Biomonitors of urban air pollution: Magnetic studies and SEM observations of corticolous foliose and microfoliose lichens and their suitability for magnetic monitoring". Environmental Pollution. 172: 61–69. doi:10.1016/j.envpol.2012.08.006. hdl:11336/6969. PMID22982554.
Chaparro, Marcos A.E.; Lavornia, Juan M.; Chaparro, Mauro A.E.; Sinito, Ana M. (2013). "Biomonitors of urban air pollution: Magnetic studies and SEM observations of corticolous foliose and microfoliose lichens and their suitability for magnetic monitoring". Environmental Pollution. 172: 61–69. doi:10.1016/j.envpol.2012.08.006. hdl:11336/6969. PMID22982554.