TY - JOUR A1 - Bjørnstad, Ottar A1 - Stenseth, Nils A1 - Saitoh, Takashi A1 - Lingj\aerde, Ole T1 - Mapping the regional transition to cyclicity in Clethrionomys rufocanus: Spectral densities and functional data analysis Y1 - 1998 JF - Researches on Population Ecology VL - 40 SP - 77 EP - -84 ER -