@article{zakovorotniy_an_hao_tem_2014, 
  title={1/3 SUBHARMONIC RESPONSE OF DUFFING OSCILLATOR UNDER PERIODIC AND RANDOM EXCITATIONS}, 
  volume={14}, 
  DOI={10.12737/6816}, 
  publisher={FSFEI HE Don State Technical University}, 
  author={Zakovorotniy and An and Hao and Tem}, 
  year={2014}, 
  month={Dec}
  }