@inbook{mills_tropf_2016, 
  title={The Biodemography of Fertility: A Review and Future Research Frontiers}, 
  DOI={10.1007/978-3-658-11490-9_17}, 
  publisher={Springer Fachmedien Wiesbaden}, 
  author={Mills and Tropf}, 
  year={2016}
  }