Monitoring of the risk of farmland abandonment as an efficient tool to assess the environmental and socio-economic impact of the Common Agriculture Policy. - Pavel Milenov; Vassil Vassilev; Anna Vassileva; Radko Radkov; Vessela Samoungi; Zlatomir Dimitrov; Nikola Vichev (Int. J. Appl. Earth Obs. Geoinformation, 2014)