The spiracle glands in Ixodes ricinus (Linnaeus, 1758) (Acari: Ixodidae)
Suppan, J.; Walzl, M. and Klepal, W.  Topographical relations between oocytes and other ovarian cells in three mite species (Acari)
Witalinski, W.  Functional microscopic anatomy of the digestive system of Tetranychus urticae (Acari, Tetranychidae)
Mothes, U. and Seitz, K.A.