original description
(of Fasciola helluo Müller, 1773) Müller, O. F. (1773-1774). <i>Vermium terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia</i>. <em>[Book].</em> Vol. 1: 1-136 Infusoria [1773] / Vol1 [part 2] 1-78 Helminthica 1-72 [1774] ; Vol. 2: 1-214 Testacea + index 8 pp. [1774]. Havniæ (Copenhagen) & Lipsiæ (Leipzig): Heineck & Faber., available online at https://www.biodiversitylibrary.org/item/50344
page(s): 64 [details] 
additional source
Dorner, G. (1902). Darstellung der Turbellarienfauna der Binnengewässer Ostpreussens. <em>Schriften der physikalisch-ökonomischen Gesellschaft zu Königsberg in Pr.</em> 43: 1-58. Taf. 1-2. [details] 
additional source
Markow, M. (1904). Essai sur la faune des Turbellaries dans les gouvernements de Kharkow et de Poltawa. [In Russian] Travaux de la Societe des naturalistes a l'Universite Imperiale de Kharkow. Travaux Soc naturall Univ Imper Kharkow, 39:1-79 (Russian with French).
page(s): 48 [details]
additional source
Brinkmann, A. (1905). Studier over Danmarks rhabdocøle og acøle Turbellarier. <em>Videnskabelige meddelelser fra den Naturhistoriske forening i Kjöbenhavn.</em> 1–159. With 5 plates.
page(s): 122 [details] 
additional source
Sekera, E. (1903). Einige Beiträge zur Lebensweise von Vortex helluo (virdis M. Sch.). <em>Zoologischer Anzeiger.</em> 26: 703–710. [details] 
source of synonymy
Graff, L. von. (1909). IV. Turbellaria, Strudelwürmer. I. Teil : Allgemeines und Rhabdocoelida. <em>Brauer Suesswasserfauna Deutschlands H.</em> 19: 59-142.
page(s): 88 [details] 
new combination reference
Hallez, P. (1894). Catalogue des Rhabdocoelides, Triclades & Polyclades du Nord de la France. 2e Édition. Imprimerie L. Danel. Lille. 239 pp, 2 plates.
page(s): 93 [details] 
From editor or global species database