@article{wang_li_duan_li_2007, 
  title={DL-Aspartic acid}, 
  volume={63}, 
  DOI={10.1107/s1600536807043097}, 
  number={10}, 
  publisher={International Union of Crystallography (IUCr)}, 
  author={Wang and Li and Duan and Li}, 
  year={2007}, 
  month={Sep}
  }