Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 19 references without a DOI — listed, not checked
no DOI — not checkedAx, P., 1951. Die Turbellarien des Eulittorals der Kieler Bucht. Zool. Jb. Syst. 80: 277?378.
no DOI — not checkedAx, P., 1959a. Zur Kenntnis der Gattung Promonotus Beklemischev (Turbellaria, Proseriata). Zool. Ariz. 163: 371?385.
no DOI — not checkedAx, P., 1959b. Zur Systematik, �kologie and Tiergeographie der Turbellarienfauna in den kaspischen Brackwassermeeren. Zool. Jb. Syst. 87: 43?184.
no DOI — not checkedAx, P. & R. Ax, 1977. Interstitielle Fauna von Galapagos XIX. Monocelididae (Turbellaria, Proseriata). Mikrofauna Meeresboden 64: 1?44.
no DOI — not checkedAx, P. & W. Armonies, 1987. Amphiatlantic identities in the composition of the boreal brackish water community of Plathelminthes. A comparison between the Canadian and European Atlantic coast. Microfauna Marina 3: 7?80.
no DOI — not checkedClapar�de, E., 1861. Etudes Anatomiques sur les Ann�lides, Turbellari�s, Opalines et Gr�garines observ�s dans les Hebrides. Win. Soc. Phys. & Hist. rat. de Gen�ve 16(S): 71?16.
no DOI — not checkedFabricius, O., 1826. Fortsaettelse of Nye Zoologiske Bidrag VI. Nogle lidet bekjendte og tideels rye Flad-Orme (Planariae). Kongl. Danske Vidensk. Selskabs. Naturv. og Mathem. Aflhandl. 2: 13?35.
no DOI — not checkedGraff, L. von., 1882. Monographie der turbellarien I. Rhabdocoelida. Leipzig, 442 pp.
no DOI — not checkedGraff, L. von., 1913. Platyhelminthes. Turbellaria II. Rhabdocoelida. Tierreich 35: 1?484.
no DOI — not checkedHyman, L. H., 1951. The invertebrates: Plathelminthes and Rhynchocoela. The acoelomate Bilateria. McGraw-Book Comp., New-York 763 pp.
no DOI — not checkedJensen, O., 1878. Tubellarier ved Norges vestkyst. Bergen. Karling, T. G., 1966. Marine Turbellaria from the Pacific coast of North America IV. 1. Coelogynoporidae and Monocelididae. Ark. Zool. 18: 493?528.
no DOI — not checkedKarling, T. G., 1974. Turbellarian fauna of the Baltic Proper. Identification, Ecology and Biogeography. Fauna fern. 27: 1?101.
no DOI — not checkedLuther, A., 1960. Die Turbellarien Ostfennoskandiens. I. Acoela, Catenulida, Macrostromida, Lecithoepitheliata, Prolecithophora, Proseriata. Fauna fenn. 7: 1?155.
no DOI — not checkedMaristo, L., 1938. Beitr�ge zur Kenntnis der Monocelidinen (Turbellaria, alloeocoela). Annales Zool. Vanamo 8: 1?69, 1t.
no DOI — not checkedMartens, P. M., 1984b. Three new Duplominona species (Turbellaria, Monocelididae, Minoninae) from the Mediterranean. Cahiers de Biologie Marine XXV: 319?331.
no DOI — not checkedMeixner, J., 1938a. Turbellaria (Strudelw�rmer) I. Tierwelt N. u. Ostsee 4b: 1?146.
no DOI — not checkedOersted, A.,1844. Entwurf einer systematischen Eintheilung der Plattw�rmer. Copenhagen.
no DOI — not checkedPapi, F., 1951. �ber einen Methode die ?chitin�sen? Gebilde des Genitalapparats bei Turbellarien zu f�rben and �ber die Bestachelung einiger Castrada-Arten. Mem. Soc. pro Fauna et Flora fern. 26: 3?8.
no DOI — not checkedSopott, B., 1972. Systematik and �kologie von Proseriaten (Turbellaria) der deutschen Nordseektiste. Mikrofauna Meeresboden 13: 1?72.
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