@article{SisLab1789,
           title = {1/3 SUBHARMONIC RESPONSE OF DUFFING OSCILLATOR UNDER PERIODIC AND RANDOM EXCITATIONS},
          author = {Dong Anh Nguyen and L. Zakovorotny V. and N. Hao D. and X. Chiem N.},
            year = {2015},
         journal = {Journal Bulletin DGTU},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/1789/}
}