@article{shackleton_pulfrey_1944, 
  title={Pre-Karroo Stratigraphy of Tanganyika}, 
  volume={81}, 
  DOI={10.1017/s0016756800075075}, 
  number={03}, 
  publisher={Cambridge University Press (CUP)}, 
  author={Shackleton and Pulfrey}, 
  year={1944}
  }