Evolution of reproductive strategies in the sexually deceptive orchid Ophrys spegodes: how does flower-specific variation of odor signals influence reproductive success? - Ayasse,M..; Schiestl,F..P..; Paulus,H..F..; Löfstedt,C..; Hansson,B..S..; Ibarra,F..; Francke,W.. (Evolution, 2000)