An Ichthyophonus hoferi epizootic in herring in the North Sea, the Skagerrak, the Kattegat and the Baltic Sea.

Mellergaard, S., Spanggaard, B., (1997). Diseases of Aquatic Organisms 28(3), 191-199. English language

Ectoparasites on northeast Atlantic mackerel (Scomber scombrus L.) from Western and North Sea stocks.

Somdal, O., Schram, T. A., (1992). Sarsia 77(1), 19-31. English language