Wytwer, J., Tajovský, K. (2009): Changes in centipede assemblages along the vertical and vegetation gradient in Bieszczady Mts. Poland. In: Tajovský, K., Schlaghamerský, J. & Pižl, V. (eds.): Contributions to Soil Zoology in Central Europe III. Institute of Soil Biology, Biology Centre, ASCR, v.v.i., České Budějovice: 173-179.
Wytwer, J., Tracz, H. (2003): Diplopoda communities in differenc forest habitats of Bialowieza Primeval Forest, Poland. African Invertebrates, 44: 293-311.
Wytwer, J., Zalewski, M. (2005): The role of island size and isolation in diversity of Myriapoda. Peckiana, 4: 195-208.
Xavier, E., Rocha, L.S. (2001): Autoecology and description of Mummucia mauryi (Solifugae, Mummuciidae), a new solifuge from Brazilian semi-arid caatinga. The Journal of Arachnology, 29: 127-134.
Xylander, W.E.R. (1992): Immune defense reactions of Myriapoda – a brief presentation of recent results. In: Meyer, E., Thaler, K., Schedl, W. (eds.): Advances in Myriapodology. Berichte des naturwissenschaftlich-medizinischen Vereins in Innsbruck, Supplement 10: 101-110. (ve sborníku)
