Krapp, F. (1975). New records of Endeis charybdaea (Dohrn, 1881) (Pycnogonida) in the Atlantic and Mediterranean seas. Sarsia 59: 85-94, details
Krapp, F.; Nieder, J. (1993). Pantopoden als Nahrung von Schleimfischen = Pycnogonids as prey of blenniid fishes. Cah. Biol. Mar. 34(3): 383-386, details
- van der Land, J.; Krapp, F. (2001). Pycnogonida, in: Costello, M.J.; Emblow, C. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 241-243, details
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