@article{thorpe_francis_1910, 
  title={On the Atomic Weight of Strontium}, 
  volume={83}, 
  DOI={10.1098/rspa.1910.0015}, 
  number={562}, 
  publisher={The Royal Society}, 
  author={Thorpe and Francis}, 
  year={1910}, 
  month={Feb}
  }