@article{Bjørnstad1998,
author = {Bjørnstad, Ottar and Stenseth, Nils and Saitoh, Takashi and Lingj\aerde, Ole},
title= {Mapping the regional transition to cyclicity in Clethrionomys rufocanus: Spectral densities and functional data analysis},
year = {1998},
journal = {Researches on Population Ecology},
volume = {40},
pages = {77--84},
}