@phdthesis{UNY8279,
           month = {October},
          author = {Pratiwi Avienta Ika},
           title = {BIFURKASI SADDLE-NODE PADA SISTEM DINAMIK},
          school = {UNIVERSITAS NEGERI YOGYAKARTA},
            year = {2012},
        abstract = {Kestabilan sistem dinamik {\.x}  = },
             url = {http://eprints.uny.ac.id/8279/}
}