IAA (International Association of Astacology)
Forum Flusskrebse (German-speaking pendant to the IAA)
TCS (The Crustacean Society)
Marmorkrebs.org (website dedicated to the `clone army´)
Edelkrebsprojekt NRW (German-speaking website of a conservation project for native crayfish in North Rhine-Westphalia)
Crayfish of Romania (very good website on crayfish in Romania)
Chucholl, C., Dehus, P. (2011). Flusskrebse in Baden-Württemberg. Fischereiforschungsstelle Baden-Württemberg (FFS), Langenargen, 92 p. (in German). PDF download here.
Eder, E., Hödl, W. (Eds.) (1998). Flusskrebse Österreichs. Stapfia 58, Linz, 284 p. ISBN 0252192X (in German)
Füreder, L., (Ed.) (2009). Flusskrebse: Biologie, Ökologie, Gefährdung. Veröffentlichungen des Naturmuseums Südtirol 6, Folio Verlag, Bozen, Wien, 144 p. ISBN: 9783852564067 (in German)
Holdich, D.M. (Ed.) (2002). Biology of Freshwater Crayfish. Blackwell Scientific Press, Oxford, 512 p. ISBN: 063205431X
Koese, B., Soes, M. (2011). De Nederlandse rivierkreeften (Astacoidea & Parastacoidea). Entomologische Tabellen 6: 1–107. ISSN: 1875-760X (in Dutch)
Kozák P., Ďuriš Z., Petrusek A., Buřič M., Horká I., Kouba A., Kozubíková E., Policar T. (Eds.) (2013). Biologie a chov raků. Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, 418 p. ISBN: 978-80-87437-42-1 (in Czech)
Reynolds, J., Souty-Grosset, C. (Eds.) (2012). Management of freshwater biodiversity. Crayfish as Bioindicators. Cambridge University Press, Cambridge, 374 p. ISBN: 0521514002
Souty-Grosset, C., Holdich, D.M., Noel, P.Y., Reynolds, J.D., Haffner, P. (Eds.) (2006). Atlas of Crayfish in Europe. Museum national d`Histoire naturelle, Paris, 187 p. ISBN: 2856535798