Akkari, N., Enghoff, H. (2011): Copulatory-copulatory male succession and male slenderness in Ommatoiulus sempervirilis n. sp., a new insular millipede from Tunisia (Diplopoda: Julida: Julidae). J Zool Syst Evol Res, 49: 285–291.
Akkari, N., Enghoff, H. (2011): On some surface structures of potential taxonomic importance in families of the suborders Polydesmidea and Dalodesmidea (Polydesmida, Diplopoda). ZooKeys, 156: 1–24.
Akkari, N., Enghoff, H. (2011): Rharodesmus Schubart, 1960—a tropical element in the North African fauna: a new species from Tunisia and notes on the family Pyrgodesmidae (Diplopoda: Polydesmida). Zootaxa, 2985: 55–63.