Serially balanced sequences in bioassay.

@article{Finney1956SeriallyBS,
  title={Serially balanced sequences in bioassay.},
  author={David J Finney and ANNE D. OUTHWAITE},
  journal={Proceedings of the Royal Society of London. Series B, Biological sciences},
  year={1956},
  volume={145 921},
  pages={493-507}
}