Revision of the genus Eutrombicula Ewing, 1938, (Acarina: Trombiculidae)
Vercammen-Grandjean, P.H. and Andy, J.R.  Revision of the subgenus Oenoschoengastia Womersley and Kohls,1947 (Acarina: Trombiculidae)
Vercammen-Grandjean, P.H. and Watkins, S.G.  Revision of Brennanella Radford, 1954 (Acarina: Leeuwenhoekiidae)
Vercammen-Grandjean, P.H.; Watkins, S.G. and Deblauwe, C.