@misc{37641,
  author = {American Chemical Society},
  title = {Percy Julian: Synthesis of Physostigmine},
  year = {1999},
  journal = {National Historic Chemical Landmarks},
  volume = {2019},
  number = {28.03.2019},
  publisher = {American Chemical Society},
  url = {http://www.acs.org/content/acs/en/education/whatischemistry/landmarks/julian.html},
  language = {eng},
}