M.  Xu, Heidmarsson, S., Thorsteinsdottir, M., Eiriksson, F. F., Omarsdottir, S., and Olafsdottir, E. S., ?DNA barcoding and LC-MS metabolite profiling of the lichen-forming genus Melanelia: Specimen identification and discrimination focusing on Icelandic taxa?, PLOS ONE, vol. 12, no. 5, p. e0178012, 2017.