@article{hartley_ramage_1901, 
  title={An Investigation of the Spectra of Flames Resulting from Operations in the Open-Hearth and 'Basic' Bessemer Processes.}, 
  volume={68}, 
  DOI={10.1098/rspl.1901.0017}, 
  number={442-450}, 
  publisher={The Royal Society}, 
  author={Hartley and Ramage}, 
  year={1901}, 
  month={Jan}
  }