@article{hantzsch_pfeiffer_1886, 
  title={Ueber Furfurankörper der Phenanthrenreihe}, 
  volume={19}, 
  DOI={10.1002/cber.188601901289}, 
  publisher={Wiley}, 
  author={Hantzsch and Pfeiffer}, 
  year={1886}
  }