Nehili M, Ilk C, Mehlhorn H, Ruhnau K, Dick W, Njayou M. Experiments on the possible role of leeches as vectors of animal and human pathogens: a light and electron microscopy study. Parasitology Research. 1994, 80 (4): 277–90. PMID 8073013. doi:10.1007/BF02351867.
Nehili M, Ilk C, Mehlhorn H, Ruhnau K, Dick W, Njayou M. Experiments on the possible role of leeches as vectors of animal and human pathogens: a light and electron microscopy study. Parasitology Research. 1994, 80 (4): 277–90. PMID 8073013. doi:10.1007/BF02351867.