8Aars J, Ires RA. 1999. The effect of habitat corridors on rates of transfer and interbreeding between vole demes. Ecology, 80: 1648-1655.
9Andreassen HP, Halle S, Ims RA. 1996. Optimal width of movement corridor for root voles: Not to narrow and not too wide. Journal of Applied Ecology, 33: 63-70.
10Andren H. 1994. Effects of habitat fragmentation on birds and mammals in landscapes with different proportions of suitable habitat: A review. Oikos, 71: 355-366.