Østbye, E., S.-E. Lauritzen, A. Fjellberg, E. Hauge, H. P. Leinaas, P. Ottesen, and T. Solhøy. “Invertebrates of Norwegian Caves I. Gastropoda, Oligochaeta, Araneae, Acari, Amphipoda, Collembola, Coleoptera, Lepidoptera and Diptera”. Fauna Norvegica, vol. 8, Dec. 1987, pp. 43-64, doi:10.5324/fn.v8i0.6096.