8Jongman, R.H.G. and Kamphorst, D. Ecological corridors in land use planning and development policy. National approach for ecological corridors of countries implementing the pan-European biological and landscape diversity strategy. Council of Europe, 1999: p 55.
9Jongman, R.H.G., Mart kulvik and Ib Kristiansen. European ecological networks and greenways[J]. Landscape Urban Plarm., 2004, 68, 305-319.
