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Vagalinski, B.; Borissov, S.; Bobeva, A.; Canciani, G.; Antić, D. Ž. The Mostly Cavernicolous Millipede Genus Stygiiulus Verhoeff, 1929, stat. nov.: Taxonomy, Distribution and Phylogenetic Relationships (Diplopoda, Julida, Julidae). EJT 2022, 798, 30-69.