Persson, T., Lenoir, L., Vegerfors, B. (2013): Which macroarthropods prefer tree stumps over soil and litter substrates? Forest Ecology and Management, 290: 30–39.
Perttunen, V. (1953): Reactions of diplopods to the relative humidity of the air, investigations on Orthomorpha gracilis, Iulus terrestris, and Schizophyllum sabulosum. Ann. Zool. Soc. “Vanamo”, 16: 1-70.
Peruffo, B. (1992): Methods for the study of living Glomeris embryos. In: Meyer, E., Thaler, K., Schedl, W. (eds.): Advances in Myriapodology. Berichte des naturwissenschaftlich-medizinischen Vereins in Innsbruck, Supplement 10: 99. (ve sborníku)