Spirosperma ferox

Literature

• Brinkhurst, R.O. & Jamieson, B.G.M. 1971. Aquatic Oligochaeta of the world. Oliver & Boyd, Edinburgh. 860 p.
• Chekanovskaya, O.V. 1981. Aquatic Oligochaeta of the USSR. Translated from Russian. Amerind Publ. Co., New Delhi. 513 p. [Original title: Cekanovskaja, O.V. 1962. Vodnye maloscetinkovye cervi fauny SSSR. Moskva-Leningrad. 411 p.].
• Eisen, G. 1879b. Preliminary report on genera and species of Tubificidae. Bihang till Kongliga Svenska Vetenskaps-Akademiens Handlingar 5(16): 1-26.
• Holmquist, C. 1978. Revision of the genus Peloscolex (Oligochaeta, Tubificidae). 1. Morphological and anatomical scrutiny; with discussion on the generic level. Zoologica Scripta 7: 187-208.
• Holmquist, C. 1979. Revision of the genus Peloscolex (Oligochaeta, Tubificidae). 2. Scrutiny of the species. Zoologica Scripta 8: 37-60.
• Hrabe, S. 1981. Vodní málostetinatci (Oligochaeta) Ceskoslovenska. Acta Universitatis Carolinae - Biologica 1979: 1-167.
• Kasprzak, K. 1981. Skaposzczety wodne, I. Rodziny: Aeolosomatidae, Potamodrilidae, Naididae, Tubificidae, Dorydrilidae, Lumbriculidae, Haplotaxidae, Glossoscolecidae, Branchiobdellidae. PAN, Instytut Zoologii, Warszawa. 226 p.