O’Donnell and Cigelnik 1997. Two divergent intragenomic rdna its2 types within a monophyletic lineage of the fungus Fusarium are nonorthologous. Molecular Phylogenetics and Evolution 7 (1): 103–116.   www.researchgate.net/profile/K_ODonnell/publication/14201598_Two_divergent_intragenomic_rDNA_ITS2_types_within_a_monophyletic_lineage_of_the_fungus_Fusarium_are_nonorthologous/links/54b3d86a0cf28ebe92e42eab.pdf