additional sourceBarus V, Nagasawa K, Tenora F, Prokes M. (2000). The head end morphology of Contracaecum rudolphii with remarks on C. himeu and C. umiu (Nematoda, Anisakidae). Acta Univ Agric Silvic Mendel Brun. <em>Barus V, Nagasawa K, Tenora F, Prokes M.</em> 48(5):69-76.[details]