Ecology and ethology of Ixodes ricinus L. in Switzerland (Ixodoidea; Ixodidae). Sixth note: detachment rhythms in Ixodes ricinus and their ecological implications
  Ecology and ethology of Ixodes ricinus L. in Switzerland. Fourth note: comparison of two populations at different altitudes
  Ecology and ethology of Ixodes ricinus L. in Switzerland. Second note: comparison of populations in 1972 and 1973
  Ecology and ethology of Ixodes ricinus Linnaeus 1758, in Switzerland (Acarina, Ixodoidea). First note: numeral fluctuations