Schmalfuss, H. (2003): Terrestrial isopods (Crustacea: Isopoda) from the Caucasus region. 5. Cylisticus Schnitzler, Paracylisticus Verhoeff, Cylisticoides n. gen. Stuttgarter Beiträge zur Naturkunde, Serie A (Biologie), 647: 1-38.
Schmalfuss, H. (2003): World catalog of terrestrial isopods (Isopoda: Oniscidea). Stuttgarter Beiträge zur Naturkunde, Serie A, 654: 341 pp.
Schmalfuss, H. (2004):Utopioniscus and the evolution of terrestrial isopods. In: Loureiro, S., Ferreira, A.L.G., Soares, A.M.V.M. (eds.): 6th international symposium on the biology of the terrestrial isopods. Aveiro: Universidade: 41.
Schmalfuss, H. (2005):The terrestrial isopods (Isopoda: Oniscidea) of Greece. 21st contribution: Genus Schizidium (Armadillidiidae). Stuttgarter Beiträge zur Naturkunde, Serie A (Biologie), 681: 1-38.
Schmalfuss, H. (2005): The terrestrial isopods (Isopoda: Oniscidea) of Greece. 22nd conribution: Genus Monocyphoniscus (Trichonsicidae). Stuttgarter Beiträge zur Naturkunde, Serie A (Biologie), 685: 1-12.
