@article{bethke_2004, 
  title={Apoplastic Synthesis of Nitric Oxide by Plant Tissues}, 
  volume={16}, 
  DOI={10.1105/tpc.017822}, 
  publisher={American Society of Plant Biologists (ASPB)}, 
  author={Bethke}, 
  year={2004}, 
  month={Feb}
  }