@phdthesis{UNY500,
          author = {- Budi Dwisetiyani},
           title = {Evaluasi Tingkat Kerentanan Longsor Lahan di Lereng Selatan Gunung Merapi, Kecamatan Pakem, Kabupaten Sleman, Daerah Istimewa Yogyakarta},
          school = {UNY},
            year = {2011},
             url = {http://eprints.uny.ac.id/500/}
}