Nine essential amino acids in pure varieties of wheat, barley, and oats.

@article{McElroy1949NineEA,
  title={Nine essential amino acids in pure varieties of wheat, barley, and oats.},
  author={L W McElroy and D R CLANDININ},
  journal={The Journal of nutrition},
  year={1949},
  volume={37 3},
  pages={329-36}
}