1. Das Phylogenetische System. Systematisierung der lebenden Natur aufgrund ihrer Phylogenese;Ax,1984
2. Ecology of animal parasites;Baer,1952
3. Histology and biology of the larval stages of Leucochloridium Carus, 1835, (Trematoda, digenea) as revealed by light and electron microscopy;Bakke;Fauna Norvegica A,1982
4. Developmental biology of triclad turbellarians;Benazzi,1982
5. Higher level classification of parasitic platyhelminthes and fundamentals of cestode classification;Brooks,1982