The water mites of Western Australia (Acari: Hydrachnidia), with the description of 13 new species
Smit, Harry  Water mites from West Africa (Acari: Hydrachnidia)
Smit, Harry  Morphology and systematics of the larvae of the Unionicola species (Hydrachnellae, Acari) of Germany
Hevers, J.  Revision of species occurring in Germany of sub-genus Unionicola s.str. (Hydrachnellae, Acari)
Hevers, J.