@phdthesis{UNY22894,
          school = {UNY},
            year = {2015},
           month = {June},
           title = {OPTIMASI RUTE DISTRIBUSI MENGGUNAKAN STEEPEST-ASCENT CLIMBING},
          author = {Endah Yuniawanti and Eminugro Ratna Sari},
             url = {http://eprints.uny.ac.id/22894/}
}