@article{asahina_fujikawa_1933, 
  title={Über die Synthese der Gyrophorsäure (1.)}, 
  volume={53}, 
  DOI={10.1248/yakushi1881.53.1_23}, 
  publisher={Pharmaceutical Society of Japan}, 
  author={Asahina and Fujikawa}, 
  year={1933}
  }