Modern Acarology : 8. International Congress of Acarology České Budějovice, Czechoslovakia August 6-11 1990, Institute of Parasitology Czechoslovak Academy of Sciences : Proceedings. Vol. 2.    Prague : Academia ; Hague : SPB Academic Publishing, 1991 . 779 s. obr., fotogr., tab., grafy, schémata, L s. fotogr. ; . ISBN 80-200-0364-9. ISBN 90-5103-054-1