Reference

Charles W. Heckman (1999): Comment on the proposed conservation of the specific names of Strombidium gyrans Stokes, 1887 (currently Strobilidium gyrans) and Strobilidium caudatum Kahl, 1932 (Ciliophora, Oligotrichida) – Bulletin of the Zoological Nomenclature – 55: 48 - 49.